Add identity_uri_transform to help move to identity_uri

Starting on the identity_uri blueprint.  A difference
between the public auth_uri and the admin identity_uri is that
the identity_uri does not include the path/version (/v2.0).
And the auth_uri has to modify the version depending upon
the needs of the environment.
There existed a helper routine called, auth_uri_transform, so
to be consistent and make this easy to follow, I created a
identity_uri_transform which simply removes the path/version
from the uri given.

This helper will then be used thru out the cookbooks to make
the switch to the identity_uri very easy.

I guess the alturnatives are messing with our generic endpoint
definitions/methods, but since they are used for many different
purposes, I think having another matching transform method is the
right way to go here.

Bumped version for adding new method which other cookbooks will
depend upon.

Change-Id: I035a4491945c600dea8feb317b357a1a69da28cd
Implements: blueprint identity-uri

libraries/uri.rb

@@ -71,4 +71,15 @@ module ::Openstack # rubocop:disable Documentation
       auth_uri.gsub('/v2.0', '/v3')
     end
   end
+
+  # Helper for creating identity_uri value for the auth_token section
+  # of component config files.
+  # The definition of identity is: the unversioned root
+  # admin identity endpoint e.g. https://localhost:35357/
+  # This method will make sure the path is removed from the uri.
+  def identity_uri_transform(identity_uri)
+    uri = ::URI.parse ::URI.encode(identity_uri.to_s)
+    uri.path = '/'
+    uri.to_s
+  end
 end

metadata.rb

@@ -4,7 +4,7 @@ maintainer_email 'opscode-chef-openstack@googlegroups.com'
 license          'Apache 2.0'
 description      'Common OpenStack attributes, libraries and recipes.'
 long_description IO.read(File.join(File.dirname(__FILE__), 'README.md'))
-version          '11.0.0'
+version          '11.1.0'
 
 recipe           'openstack-common', 'Installs/Configures common recipes'
 recipe           'openstack-common::set_endpoints_by_interface', 'Set endpoints by interface'

spec/uri_spec.rb

@@ -117,4 +117,19 @@ describe 'Openstack uri' do
       ).to eq(expected_auth_uri)
     end
   end
+
+  describe '#identity_uri_transform' do
+    it 'removes the path segment from identity admin endpoint' do
+      expect(
+        subject.identity_uri_transform('http://localhost:35357/v2.0')
+      ).to eq('http://localhost:35357/')
+    end
+
+    it 'does not effect a valid identity admin endpoint' do
+      identity_uri = 'http://localhost:35357/'
+      expect(
+        subject.identity_uri_transform(identity_uri)
+      ).to eq(identity_uri)
+    end
+  end
 end