Allow dot (.) for key in xsd schema

etc/content_provisioning.xsd

@@ -84,7 +84,7 @@
             </xs:documentation>
         </xs:annotation>
         <xs:restriction base="xs:string">
-            <xs:pattern value="[a-zA-Z0-9_\\\-]{1,}" />
+            <xs:pattern value="[a-zA-Z0-9_\\\-\.]{1,}" />
             <xs:minLength value="2" />
         </xs:restriction>
     </xs:simpleType>