Remove devstack-precise-check rax images

Once the check nodes from rax have been exhausted, this patch
can merge in order to stop building those images.

Change-Id: I73da4ca1940660842b83392dad6674e991954712
Increase hpcloud ssh timeout to 180

We seem to be hitting the timeout alot recently.

Change-Id: I1b4511408dca63aaa73639f9c203298725fe4fed
Create more bare-precise nodes

From rax and HP.  Preparation for moving unit test jobs to them.

Change-Id: I79fd9439150ac674120000cd37db7b2fb1f87e2d
Merge "Remove devstack-precise-check rax images"
Merge "Increase hpcloud ssh timeout to 180"
Merge "Create more bare-precise nodes"