SP-128 / BIS-14 Query Plugins in JSON-RPC - improve unit tests

...msx/cisd/common/api/server/json/common/JsonConstants.java

.../server/json/deserializer/JsonTypeAndClassSerializer.java

.../introspector/JsonTypeAndClassAnnotationIntrospector.java

...mon/api/server/json/serializer/JsonSerializerFactory.java

.../cisd/common/api/server/json/JsonDeserializationTest.java

...sx/cisd/common/api/server/json/JsonSerializationTest.java

...msx/cisd/common/api/server/json/JsonTestObjectMapper.java

...msx/cisd/common/api/server/json/common/ObjectCounter.java

...ystemsx/cisd/common/api/server/json/common/ObjectMap.java

...stemsx/cisd/common/api/server/json/common/ObjectType.java

...mmon/api/server/json/object/ObjectWithContainerTypes.java

...sd/common/api/server/json/object/ObjectWithDateTypes.java

...sd/common/api/server/json/object/ObjectWithEnumTypes.java

...n/api/server/json/object/ObjectWithIgnoredProperties.java

.../common/api/server/json/object/ObjectWithNestedTypes.java

...mmon/api/server/json/object/ObjectWithPrimitiveTypes.java

...ommon/api/server/json/object/ObjectWithPrivateAccess.java

...n/api/server/json/object/ObjectWithRenamedProperties.java

...sx/cisd/common/api/server/json/object/ObjectWithType.java

...x/cisd/common/api/server/json/object/ObjectWithTypeA.java