Use double quotes for string comparisons policies in glance
Use double quotes for string comparisons policies in glance

TripleO lays down policy check strings wrapped in single quotes, which
will break if we don't escape them. This commit updates the policies to
use double quotes so it's not an issue.

Otherwise, if you deploy this file in an environment glance will throw
500s with the following error:

  expected <block end>, but found '<scalar>'
  in "<unicode string>", line 22, column 110:
     ... or project_id:%(member_id)s or 'community':%(visibility)s or 'pu ...

Change-Id: I9315a1039246f3db10c3902583eb6ca51cffdba4

openstack/tripleo-heat-templates,openstack/tripleo-heat-templates