GEODE-8032: Fix unit test and reclassify some tests as integration tests

[kirklund]

I found 3 tests named *IntegrationTests in src/test that need to move:
* geode-core/src/test/java/org/apache/geode/distributed/internal/InternalDistributedSystemIntegrationTest.java
* geode-protobuf/src/test/java/org/apache/geode/internal/protocol/protobuf/v1/operations/OqlQueryRequestOperationHandlerIntegrationTest.java
* geode-wan/src/test/java/org/apache/geode/internal/cache/wan/GatewaySenderEventRemoteDispatcherIntegrationTest.java

These are unit tests that are better off renamed and moved to src/integrationTest because they touch several Geode classes including singletons:
* geode-core/src/test/java/org/apache/geode/distributed/internal/InternalLocatorTest.java
* geode-core/src/test/java/org/apache/geode/distributed/internal/locks/DLockServiceJUnitTest.java

This one creates a full DistributedSystem stack so it belongs in src/integrationTest:
* geode-core/src/test/java/org/apache/geode/distributed/internal/InternalDistributedSystemTest.java

And these unit tests create a full Cache stack so they belong in src/integrationTest:
* geode-lucene/src/test/java/org/apache/geode/cache/lucene/FlatFormatPdxSerializerJunitTest.java
* geode-protobuf/src/test/java/org/apache/geode/internal/protocol/protobuf/v1/serialization/codec/JsonPdxConverterJUnitTest.java

And one last unit test that I was able to fix -- this test creates a spy to test as a partial mock with a common goof that results in a full Cache being created and then not used by the test:
* extensions/geode-modules/src/test/java/org/apache/geode/modules/util/BootstrappingFunctionTest.java

@jdeppe-pivotal please review BootstrappingFunctionTest.java
@dschneider-pivotal please review InternalLocatorClusterManagementServiceIntegrationTest.java
@kirklund please review InternalDistributedSystemIntegrationTest.java
@pivotal-eshu please review InternalDistributedSystemLockMemoryIntegrationTest.java
@bschuchardt please review DLockServiceDisconnectIntegrationTest.java
@gesterzhou please review FlatFormatPdxSerializerIntegrationTest.java
@upthewaterspout please review OqlQueryRequestOperationHandlerIntegrationTest.java
@kohlmu-pivotal please review JsonPdxConverterIntegrationTest.java
@Bill please review GatewaySenderEventRemoteDispatcherIntegrationTest.java

[DonalEvans]

This should definitely help avoid test ordering issues causing spurious failures.

[bschuchardt]

someone more familiar with Functions should review the refactoring of BootstrappingFunction. The rest of the changes look good to me. Thanks for doing this work Kirk.

[kirklund]

Tomcat session tests failed in UpgradeTestOpen. Unrelated to this PR.

[kirklund]

Tomcat session tests are still failing in UpgradeTestOpen.

[kirklund]

Backing out the changes to BootstrappingFunction restores UpgradeTest to GREEN. I have filed https://issues.apache.org/jira/browse/GEODE-8040 and renamed/moved BootstrappingFunctionTest to src/integrationTest so that it won't break any other unit tests.

[kirklund]

DistributedTest has an unrelated failure:

org.apache.geode.distributed.internal.deadlock.GemFireDeadlockDetectorDUnitTest > testDistributedDeadlockWithDLock FAILED
    java.lang.AssertionError
        at org.junit.Assert.fail(Assert.java:86)
        at org.junit.Assert.assertTrue(Assert.java:41)
        at org.junit.Assert.assertTrue(Assert.java:52)
        at org.apache.geode.distributed.internal.deadlock.GemFireDeadlockDetectorDUnitTest.testDistributedDeadlockWithDLock(GemFireDeadlockDetectorDUnitTest.java:201)