feat(deisctl) : add update command and updatectl package
feat(deisctl): add utils for client instance functions
feat(deisctl): removed systemd and distibuted lock
Merge pull request #1 from deis/updatectl

Integrating updatectl logic to deisctl
feat(deisctl): updated command instance
Merge pull request #2 from deis/updatectl

feat(deisctl): updated command instance
feat(deisctl): fix package names
Merge pull request #3 from deis/updatectl

feat(deisctl): fix package names
wip
wip units
feat(deisctl) : change flag to string