Bump java version compatiblity to 1.7
Add descripting message in PooledDataSourceCreatorsTest to better understand test failure in CI
Fixes to get dbcp-related tests pass on the CI system

 - Prefer dbcp2 over dbcp
 - Break PooledDataSourceCreatorsTest into multiple small tests
 - Revert Java compatiblity to 1.6
Added service connectors for Cloud Foundry user-provided services.
Merge branch 'ups' of github.com:scottfrederick/spring-cloud into scottfrederick-ups