Remove . from default classpath for cli launcher

Since "." is already on the search path for config files, it is
not obviously necessary to add "." to the classpath as well.

docs/src/main/asciidoc/spring-cloud-cli.adoc

@@ -69,6 +69,36 @@ spring:
           uri: file://${user.home}/dev/demo/config-repo
 ----
 
+=== Adding Additional Applications
+
+Additional applications can be added to `./config/cloud.yml` (not
+`./config.yml` because that would replace the defaults), e.g. with
+
+.config/cloud.yml
+[source,yaml]
+----
+spring:
+  cloud:
+    launcher:
+      deployables:
+        source:
+          coordinates: maven://com.example:source:0.0.1-SNAPSHOT
+          port: 7000
+        sink:
+          coordinates: maven://com.example:sink:0.0.1-SNAPSHOT
+          port: 7001
+----
+
+when you list the apps:
+
+[source]
+----
+$ spring cloud --list
+source sink configserver dataflow eureka h2 hystrixdashboard kafka zipkin
+----
+
+(notice the additional apps at the start of the list).
+
 == Writing Groovy Scripts and Running Applications
 
 Spring Cloud CLI has support for most of the Spring Cloud declarative

spring-cloud-launcher/spring-cloud-launcher-cli/src/main/java/org/springframework/cloud/launcher/cli/LauncherCommand.java

@@ -166,11 +166,6 @@ public class LauncherCommand extends OptionParsingCommand {
 			repositoryConfiguration.add(0, new RepositoryConfiguration("local",
 					new File("repository").toURI(), true));
 
-			String[] classpaths = { "." };
-			for (String classpath : classpaths) {
-				loader.addClasspath(classpath);
-			}
-
 			if (options.has(debugOption)) {
 				System.setProperty("groovy.grape.report.downloads", "true");
 			}

spring-cloud-launcher/spring-cloud-launcher-cli/src/test/resources/cloud-test.yml

@@ -1,3 +1,4 @@
+debug: true
 spring:
   cloud:
     launcher: