Auto consume tls_enabled information in VCAP_SERVICES

[waciuma4pivotal]

PCC Broker team has completed work so that PCC will include a boolean value for "tls-enabled" in VCAP_SERVICES. It will be included in a future release. This should allow SBDG to move forward on #61

[jxblum]

Thank you @waciuma4pivotal for filing this Issue ticket, however, the required changes as described in #61 have already been made to SBDG.

For technical details, see here:

https://github.com/spring-projects/spring-boot-data-geode/blob/1.2.1.RELEASE/spring-geode/src/main/java/org/springframework/geode/core/env/VcapPropertySource.java#L79

Thank you!