Set keystone http scheme correctly

When the management and public network ranges differ the http scheme in
the dashboard config file for keystone omit the http or https portion of
the config option.  This sets it.

Resolves rcbops/chef-cookbooks/Issue#753
Merge pull request #147 from rackerjoe/Issue753

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Add python-compressor and python-django-compressor

Adds these two packages to the list of packages that we will upgraded.

Partially resolves https://github.com/rcbops/chef-cookbooks/issues/760
Merge pull request #151 from rackerjoe/Issue760

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Add attribute to set site branding for Horizon

Adds the SITE_BRANDING variable to local_settings.py,
controlled by node["horizon"]["site_branding"].

Defaults to "OpenStack Dashboard".
Merge pull request #153 from DavidWittman/site-branding

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Enable changing user password in Horizon
Merge pull request #154 from pellaeon/master

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