fix failing test for env vars order
add commands and values validation
change command name validation to whitelist of allowed characters
add safe_yaml gem
Merge pull request #2 in DEP/upstart-exporter from feature-UTILS-2-procfile-v2 to master

# By monshq
# Via monshq
* commit 'b34616e2841ed746ca56d7e908421effed4a6469':
  add safe_yaml gem
  change command name validation to whitelist of allowed characters
  add commands and values validation
  fix failing test for env vars order
add start_on_runlevel for app conf
add start/stop on commands for main and child processes
Правки опечаток
Поправил логику respawn
Merge pull request #3 in DEP/upstart-exporter from feature-UTILS-2-procfile-v2 to master

# By Egor Blinov (2) and av (2)
# Via av
* commit '65eb3f514f659326a520c9d4e7ea79272f75f71f':
  Поправил логику respawn
  Правки опечаток
  add start/stop on commands for main and child processes
  add start_on_runlevel for app conf