Add keystonerc_admin generation back in

Add back the generation of keystonerc_admin, but have it work only if
create_adminrc is defined and true.

Change-Id: Id67d6639571c509e4f7239b0d3187861c590f5e0
updates to run.sh to enable teardown, added cleanup.sh to match run.sh

Change-Id: I835c87abbfa58d2c9c011470d22b1c863473624d

wrapped cleanup into a shell script to match run.sh

Change-Id: I3e928aa727f4fedcced8d228ae0d025569a25bd3