Based on the decision to discontinue the support
of Spring Data for Apache Geode [1], this commit
removes the support for Geode in Spring Batch.
The code will be moved to the spring-batch-extensions
repository as a community-driven effort.
[1]: https://github.com/spring-projects/spring-data-geode#noticeResolves#4214
XStream is only used for tests, and is not an optional
production dependency. This commit moves the property
declaration to the correct section in the pom file.
This is to fix the following error:
```
java.lang.NoSuchMethodError: 'org.junit.platform.engine.ConfigurationParameters org.junit.platform.launcher.TestPlan.getConfigurationParameters()'
at org.springframework.kafka.test.junit.GlobalEmbeddedKafkaTestExecutionListener.testPlanExecutionStarted(GlobalEmbeddedKafkaTestExecutionListener.java:91)
at org.junit.platform.launcher.core.TestExecutionListenerRegistry$CompositeTestExecutionListener.lambda$testPlanExecutionStarted$6(TestExecutionListenerRegistry.java:97)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at org.junit.platform.launcher.core.TestExecutionListenerRegistry.notifyTestExecutionListeners(TestExecutionListenerRegistry.java:59)
at org.junit.platform.launcher.core.TestExecutionListenerRegistry.access$100(TestExecutionListenerRegistry.java:28)
at org.junit.platform.launcher.core.TestExecutionListenerRegistry$CompositeTestExecutionListener.testPlanExecutionStarted(TestExecutionListenerRegistry.java:97)
at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$6(DefaultLauncher.java:183)
at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:202)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:181)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:128)
at org.apache.maven.surefire.junitplatform.JUnitPlatformProvider.invokeAllTests(JUnitPlatformProvider.java:150)
at org.apache.maven.surefire.junitplatform.JUnitPlatformProvider.invoke(JUnitPlatformProvider.java:124)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:384)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:345)
at org.apache.maven.surefire.booter.ForkedBooter.execute(ForkedBooter.java:126)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:418)
```
`org.junit.platform.launcher.TestPlan.getConfigurationParameters()` was
introduced in `junit-platform-launcher:1.8`, and `maven-surefire-plugin`
upgraded to that version in `3.0.0-M6` [1].
[1]: https://issues.apache.org/jira/browse/SUREFIRE-1935
