Added proper table names and added maven plugin for liquibase
Merge remote-tracking branch 'origin/master'

Conflicts:
	src/main/java/com/cloudezz/houston/domain/AppImageCfg.java
	src/main/java/com/cloudezz/houston/domain/BaseImageCfg.java
	src/main/java/com/cloudezz/houston/domain/ServiceImageCfg.java