Upgrade SpringBoot to 1.5.4
Upgrade Spring Cloud Connectors to 1.2.4
Upgrade Java to 1.8
Upgrade gradle to version 3.5

Polish the gradle build file

Create a a custom health aggregator that only reports on the health of
the database being used. For example if Redis is used it does not
report on the health of th SQL database and Redis, if a SQL db is used
it does not report on the heath of mongodb and redis