[FABRIC-632] Cannot download scriptengines-jruby
Ensure threadPool is being closed in GitDataStore.
Fix join command to properly install bundles when needed.
Increase the command timeout which is exausted by some commands (e.g. ensemble-add/remove).
comment out gateway feature b/c module is excluded due to jdk 1.7 dep
#143 moved the gateway to only be built on jdk 1.7