Add isvcs-env handling

Allow user to specify environment variables for internal services via
command line or environment variables
Set ES_JAVA_OPTS for elasticsearch_logstash
Remove redundant action from recipe

'go install' performs 'go build'; why do them both?
Merge pull request #1088 from control-center/feature/CC-191

Add isvcs environment handling
Merge pull request #1089 from control-center/feature/makefile

Remove redundant action from recipe
Add documentation for SERVICED_ISVCS_ENV
Merge pull request #1090 from control-center/feature/isvcsEnvDoc

Add documentation for SERVICED_ISVCS_ENV
Remove libcgroup as a dep from the serviced rpm
Merge pull request #1091 from control-center/feature/removeLibcgroup

Remove libcgroup as a dep from the serviced rpm
Merge remote-tracking branch 'origin' into feature/CC-157-3
undo removal of go build