Normalize spaces in values and candidates
Normalize spaces in values and candidates

There are some uefi configuration options that have a confusing yet
specific number of spaces in the setting.  Improve the experience by
normalizing all whitespace to single space in the candidate and
the value to select the correct one that will make it to the system.

Change-Id: I6b3e162fbaff342077bb16ebcdf492a84dd67529

openstack/pyghmi,stackforge/pyghmi,openstack/pyghmi