Upgrades Spring Data GemFire to GemFire 7.0.2.
Resolves JIRA improvement SGF-265, appropriately handling the 'new' Query result type (ResultsCollectionPdxDeserializerWrapper) introduced and returned by GemFire's Querying infrastructure in 7.0.2, breaking backwards compatibility with 7.0.1 for certain types of Queries.
Added test cases to test and assert the correct behavior of the StringBasedGemfireRepositoryQuery.toCollection(..) method for handling various GemFire Select Query result types.