validate flag input for -putmetrics, -putenv (#366)
validate flag input for -putmetrics, -putenv (#366)


benoittoulme/containerpilot,joyent/containerbuddy,tgross/containerbuddy,benoittoulme/containerpilot,joyent/containerpilot,joyent/containerpilot,joyent/containerbuddy,joyent/containerpilot,benoittoulme/containerpilot,tgross/containerbuddy