ubuntu-v0.1.7

• Fix is_runit_installed check /usr/bin/sv instead of /sbin/runit #6
• Upgrade cfssl 1.2.0
• Add ssl-helper that allow certificate auto-renew and let choose
  certificate generator (cfssl-helper default, or jsonssl-helper)
• Add jsonssl-helper that get certificates from a json file
• Add to the 'run' tool options --run-only, --wait-first-startup, --wait-state, --cmd
  --keepalived becomes --keepalive-force,
  --keepalive now only keep alive container if all startup files and process
  exited without error.
• Change .yaml.startup and .json.startup files to .startup.yaml and .startup.json
• Fix logrotate config