Migrates existing schedules to SCDF 2.3.0

resolves #121

This app pulls in data from the PCFScheduler, AppSummary, AppManifest, the SCDF Task Definition Schema
to construct the new schedule for the migration.

You will note that for the App Summary, the code was pulled directly from the CF-Deployer, the reason
this was done was to obtain additional schedule information required for the migration, without having to make
another call to retrieve the app summary (i.e. obtain this detail while its still there).

As discussed in the README, you will see that not all properties could be obtained from the
available resources and thus have to be populated by a property that user can establish at runtime.
However this also means this affects all schedules to be migrated.

Updated to allow user to setup maven repository

Updated instructions to include how to execute migration

Updated docs

Updated to support deployer format for tasks

Also updated deployers to current release

dataflow-migrate-schedules/src/test/java/io/spring/migrateschedule/AbstractApplications.java

@@ -0,0 +1,166 @@
+/*
+ * Copyright 2019 the original author or authors.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package io.spring.migrateschedule;
+
+import org.cloudfoundry.doppler.LogMessage;
+import org.cloudfoundry.operations.applications.ApplicationEvent;
+import org.cloudfoundry.operations.applications.ApplicationManifest;
+import org.cloudfoundry.operations.applications.ApplicationSshEnabledRequest;
+import org.cloudfoundry.operations.applications.ApplicationSummary;
+import org.cloudfoundry.operations.applications.Applications;
+import org.cloudfoundry.operations.applications.CopySourceApplicationRequest;
+import org.cloudfoundry.operations.applications.DeleteApplicationRequest;
+import org.cloudfoundry.operations.applications.DisableApplicationSshRequest;
+import org.cloudfoundry.operations.applications.EnableApplicationSshRequest;
+import org.cloudfoundry.operations.applications.GetApplicationEventsRequest;
+import org.cloudfoundry.operations.applications.GetApplicationManifestRequest;
+import org.cloudfoundry.operations.applications.ListApplicationTasksRequest;
+import org.cloudfoundry.operations.applications.LogsRequest;
+import org.cloudfoundry.operations.applications.PushApplicationManifestRequest;
+import org.cloudfoundry.operations.applications.PushApplicationRequest;
+import org.cloudfoundry.operations.applications.RenameApplicationRequest;
+import org.cloudfoundry.operations.applications.RestageApplicationRequest;
+import org.cloudfoundry.operations.applications.RestartApplicationInstanceRequest;
+import org.cloudfoundry.operations.applications.RestartApplicationRequest;
+import org.cloudfoundry.operations.applications.RunApplicationTaskRequest;
+import org.cloudfoundry.operations.applications.ScaleApplicationRequest;
+import org.cloudfoundry.operations.applications.SetApplicationHealthCheckRequest;
+import org.cloudfoundry.operations.applications.SetEnvironmentVariableApplicationRequest;
+import org.cloudfoundry.operations.applications.StartApplicationRequest;
+import org.cloudfoundry.operations.applications.StopApplicationRequest;
+import org.cloudfoundry.operations.applications.Task;
+import org.cloudfoundry.operations.applications.TerminateApplicationTaskRequest;
+import org.cloudfoundry.operations.applications.UnsetEnvironmentVariableApplicationRequest;
+import reactor.core.publisher.Flux;
+import reactor.core.publisher.Mono;
+
+public abstract class AbstractApplications implements Applications {
+	@Override
+	public Mono<Void> copySource(CopySourceApplicationRequest copySourceApplicationRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> delete(DeleteApplicationRequest deleteApplicationRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> disableSsh(DisableApplicationSshRequest disableApplicationSshRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> enableSsh(EnableApplicationSshRequest enableApplicationSshRequest) {
+		return null;
+	}
+
+	@Override
+	public Flux<ApplicationEvent> getEvents(GetApplicationEventsRequest getApplicationEventsRequest) {
+		return null;
+	}
+
+	@Override
+	public Flux<ApplicationSummary> list() {
+		return null;
+	}
+
+	@Override
+	public Flux<Task> listTasks(ListApplicationTasksRequest listApplicationTasksRequest) {
+		return null;
+	}
+
+	@Override
+	public Flux<LogMessage> logs(LogsRequest logsRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> push(PushApplicationRequest pushApplicationRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> pushManifest(PushApplicationManifestRequest pushApplicationManifestRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> rename(RenameApplicationRequest renameApplicationRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> restage(RestageApplicationRequest restageApplicationRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> restart(RestartApplicationRequest restartApplicationRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> restartInstance(RestartApplicationInstanceRequest restartApplicationInstanceRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Task> runTask(RunApplicationTaskRequest runApplicationTaskRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> terminateTask(TerminateApplicationTaskRequest terminateApplicationTaskRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> scale(ScaleApplicationRequest scaleApplicationRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> setEnvironmentVariable(SetEnvironmentVariableApplicationRequest setEnvironmentVariableApplicationRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> setHealthCheck(SetApplicationHealthCheckRequest setApplicationHealthCheckRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Boolean> sshEnabled(ApplicationSshEnabledRequest applicationSshEnabledRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> start(StartApplicationRequest startApplicationRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> stop(StopApplicationRequest stopApplicationRequest) {
+		return null;
+	}
+
+	@Override
+	public Mono<Void> unsetEnvironmentVariable(UnsetEnvironmentVariableApplicationRequest unsetEnvironmentVariableApplicationRequest) {
+		return null;
+	}
+}