Pin Rake for Ruby 1.8.7

Rake 10.2 has dropped Ruby 1.8.7 support, this patch pins that version to use
10.1.1.

Signed-off-by: Ken Barber <ken@bob.sh>
Merge pull request #896 from kbarber/maint/1.5.x/pin-rake-gem

Pin Rake for Ruby 1.8.7
PDB-554 Switch to using new experimental ec2 beaker driver

This patch modifies our Gemfile and acceptance configuration so that we are
using my experimental EC2 backend driver from beaker.

At the moment its just pointing at my branch, so we can continue to test this
with our real Jenkins runs before releasing it to beaker proper.

Signed-off-by: Ken Barber <ken@bob.sh>
PDB-554 Remove temp refspec entry

Signed-off-by: Ken Barber <ken@bob.sh>
Merge pull request #909 from kbarber/ticket/1.5.x/pdb-554-cutover-to-new-experimental-ec2-beaker-driver

PDB-554 Switch to using new experimental ec2 beaker driver
(maint) have beaker tests use the host.hostname instead of host.name

-  when you want the current hostname use host.hostname, for some
   provisioners host.name is the name provided by the user but the
   current hostname is generated on the fly and thus different.
Merge pull request #915 from anodelman/beaker-1.5.x-hostname-mistmatch

(maint) have beaker tests use the host.hostname instead of host.name