msg.match is an array, not a function object.

I am too used to python!

Auditors: kamens

Test plan:
Ran
   sun, set default
successfully on hipchat, and when I visited
   http://jenkins.khanacademy.org/job/deploy-set-default/459/console
I saw that it said
   ../jenkins-tools/deploy_pipeline.py set-default --lockdir=/mnt/jenkins/jobs/deploy-via-multijob/workspace/tmp/deploy.lockdir --token=Tb99a0f2d8f99f0886447135fec5d81bd00843a89
showing that the token got passed correctly via the url in the hipchat message.