add do_package_upgrades to horizon for grizzly upgrades

Part of TA220
Merge pull request #100 from rackerjoe/TA220

Merged automatically by jenkins after successful build test
Download images if using Rackspace theme.
Merge pull request #101 from git-harry/grizzly

Merged automatically by jenkins after successful build test
Fixes dashboard issues
Merge pull request #102 from git-harry/grizzly

Merged automatically by jenkins after successful build test
add tailor config
tailor and foodcritic fixes
Merge pull request #104 from rackerjoe/foodcritic

Merged automatically by jenkins after successful build test
Allow horizon to work with keystone ssl
Merge pull request #105 from andymcc/ks_sslerate

Merged automatically by jenkins after successful build test
changing Rackspace theme image location for v4
Merge pull request #106 from jcannava/grizzly

changing Rackspace theme image location for v4
Fix documentation for OPENSTACK_ENDPOINT_TYPE

The default endpoint type is "publicURL", despite
what the official Horizon documentation says.
Add attribute for OPENSTACK_ENDPOINT_TYPE

This setting controls which endpoints Horizon will use from
the Keystone service catalog. The default attribute will be
set to `internalURL`, which should probably only be changed
if Horizon is running external to the OpenStack environment.
Merge pull request #107 from DavidWittman/grizzly

Add support for setting OPENSTACK_ENDPOINT_TYPE
make image assets attribute driven
remove errant code paste
rename attribute for simplicity
Merge pull request #109 from egon010/grizzly

Grizzly