Use proper function in yum.py

The `_find_template_and_rpm_name` function is used
instead of non-existing `_get_template_and_rpm_name` one.

Change-Id: I6f8f4f97e825bc8b8693862d11a0761d4fd6274c
Remove pip helper object since its not used

Change-Id: Ic6c5bcf9e08bfd67ddf3aad211b1dd5f9c74d6fb
Be more careful with AttrubuteErrors

AttributeError should be caught as close to the place where it may
be raised as possible to avoid hiding real bugs.

Change-Id: I992e9674673fe1ed2376c46bb68fb63bd077db24
Use older troveclient version for 2013.2.2

Horizon 2013.2.2 requires python-troveclient < 1.

Change-Id: I38d08c028bbd5a0ed4735538afc674782669e547
Merge "Use proper function in yum.py"
Merge "Be more careful with AttrubuteErrors"
Merge "Remove pip helper object since its not used"