Create shared tokens for external links

Author: sharwell

src/Documentation/Content/Authentication/Authentication.aml

@@ -30,10 +30,7 @@
             <para>
               <codeEntityReference>T:net.openstack.Core.Providers.IIdentityProvider</codeEntityReference>:
               This interface is defines the basic methods for authenticating a client against a service.
-              The interface follows an API similar to the <externalLink>
-                <linkText>OpenStack Identity Service</linkText>
-                <linkUri>http://docs.openstack.org/api/openstack-identity-service/2.0/content/</linkUri>
-              </externalLink>.
+              The interface follows an API similar to the <token>OpenStackIdentityService</token>.
             </para>
           </listItem>
           <listItem>

src/Documentation/Content/Authentication/HPAuthentication.aml

@@ -28,10 +28,7 @@
               and initialize its properties with the desired authentication credentials. The
               <codeEntityReference>T:net.openstack.Core.Domain.CloudIdentityWithProject</codeEntityReference>
               credentials class allows the <codeInline>tenantName</codeInline> and <codeInline>tenantId</codeInline>
-              properties described in the HP documentation on <externalLink>
-                <linkText>Scoped Tokens</linkText>
-                <linkUri>http://docs.hpcloud.com/api/identity/#scoped-tokens</linkUri>
-              </externalLink> to be defined.
+              properties described in the HP documentation on <token>HpScopedTokens</token> to be defined.
             </para>
             <list class="bullet">
               <listItem>

src/Documentation/SharedTokens.tokens

@@ -52,6 +52,16 @@
       <ddue:linkUri>https://github.com/rackerlabs/dotnet-threading</ddue:linkUri>
     </ddue:externalLink></item>
 
+  <item id="OpenStackIdentityService"><ddue:externalLink>
+                <ddue:linkText>OpenStack Identity Service</ddue:linkText>
+                <ddue:linkUri>http://docs.openstack.org/api/openstack-identity-service/2.0/content/</ddue:linkUri>
+              </ddue:externalLink></item>
+
+  <item id="HpScopedTokens"><ddue:externalLink>
+                <ddue:linkText>Scoped Tokens</ddue:linkText>
+                <ddue:linkUri>http://docs.hpcloud.com/api/identity/#scoped-tokens</ddue:linkUri>
+              </ddue:externalLink></item>
+
   <item id="Async"><ddue:markup><span class="keyword">async</span></ddue:markup></item>
 
   <item id="Await"><ddue:markup><span class="keyword">await</span></ddue:markup></item>