Add optional extensions section to credential.

protogeni/security/credential.rnc

@@ -86,6 +86,8 @@ credentials = element credential {
     element expires { xsd:dateTime },
     ## Privileges or a ticket
     (PrivilegesSpec | TicketSpec | CapabilitiesSpec),
+    ## Optional Extensions
+    element extensions { anyelementbody }*,
     ## Parent that delegated to us
     element parent { credentials }?
 }

protogeni/security/credential.xsd

@@ -132,6 +132,7 @@
           <xs:element ref="ticket"/>
           <xs:element ref="capabilities"/>
         </xs:choice>
+        <xs:element minOccurs="0" maxOccurs="unbounded" ref="extensions"/>
         <xs:element minOccurs="0" ref="parent"/>
       </xs:sequence>
       <xs:attribute ref="xml:id" use="required"/>
@@ -179,6 +180,15 @@
       <xs:documentation>Expires on</xs:documentation>
     </xs:annotation>
   </xs:element>
+  <xs:element name="extensions">
+    <xs:annotation>
+      <xs:documentation>Optional Extensions</xs:documentation>
+    </xs:annotation>
+    <xs:complexType mixed="true">
+      <xs:group ref="anyelementbody"/>
+      <xs:attributeGroup ref="anyelementbody"/>
+    </xs:complexType>
+  </xs:element>
   <xs:element name="parent" type="credentials">
     <xs:annotation>
       <xs:documentation>Parent that delegated to us</xs:documentation>