accidentally missed the th_queue_purge change to thqueuepurge and th_logs_delete to thlogsdelete. So the function fails.
Commit pushed to master at https://github.com/mozilla/treeherder https://github.com/mozilla/treeherder/commit/f238a9cf31f0770cca9c0dd9befd630fa0f680e6 Bug 1173192 - Fix and enhance the .bash_aliases file
This commit included a couple other small fixes to the .bash_aliases file for our vagrant environments. But discussed it with emorley, and he was cool with making it just part of this commit.