Add minification support to debug builds.
Add minification support to debug builds.

Mostly due a large count of methods which affect DEX limit.
Most guilty dependencies are Google Play Services and Bouncycastle.

Alternative is multidex, but it is too much radical.

sauravvishal8797/hawkular-android-client,anuj1708/hawkular-android-buff,pg301/hawkular-android-client,anuj1708/hawkular-android-client,hawkular/hawkular-android-client,shubhamvashisht/hawkular-android-client,danielpassos/hawkular-android-client