Remove "command" string from logger
Remove "command" string from logger

Since not all triggers are commands, removing the word `command` from
the logger so it is not confused with other types of triggers.

chrisroberts/vagrant,mitchellh/vagrant,chrisroberts/vagrant,marxarelli/vagrant,sni/vagrant,sni/vagrant,gitebra/vagrant,bryson/vagrant,mitchellh/vagrant,sni/vagrant,chrisroberts/vagrant,chrisroberts/vagrant,bryson/vagrant,sni/vagrant,marxarelli/vagrant,marxarelli/vagrant,gitebra/vagrant,bryson/vagrant,bryson/vagrant,marxarelli/vagrant,gitebra/vagrant,mitchellh/vagrant,gitebra/vagrant,mitchellh/vagrant