Clean up local variable usage - Backends

Combines cleanup for mysql, postgresql and rpc

Change-Id: I37b928a669146671c946fc1ccb8e3ef1a27a3891
Fixes tempest script to accomodate Storage Vendor Names with spaces.

Change-Id: Ic651fbffaba9a9723ab572e8e8b732f6bea6d1c6
Closes-Bug: 1329597
Workaround for overwriting setuptools on RHEL

This old setuptools egg-info file causes havoc and really weird pip
install errors.  I think possibly not everyone has the
python-setuptools package installed, so it may only appear in some
situations.

Change-Id: I7ef0fa35c650e323a8945ed7c5c7754ca62a0ca5
Remove unused tools

Remove old tools for building ramdisk images and the original
PXE boot environment.

Change-Id: I81dcc823387c610d3090e5397ed5e42244d6dc3d
Merge "Workaround for overwriting setuptools on RHEL"
Merge "Fixes tempest script to accomodate Storage Vendor Names with spaces."
Merge "Clean up local variable usage - Backends"
Merge "Remove unused tools"
Merge commit 'refs/changes/83/86083/2' of git://gold.eng.hq.xensource.com/git/github/openstack-dev/devstack into tmpbranch