Added Access-Control-Allow-Origin to exposed headers (#70)

Author: adrianparr

proxies/live/apiproxy/policies/AssignMessage.AddCors.xml

@@ -5,7 +5,7 @@
         <Headers>
             <Header name="Access-Control-Allow-Origin">*</Header>
             <Header name="Access-Control-Allow-Headers">origin, x-requested-with, accept, content-type, nhsd-session-urid, apikey</Header>
-            <Header name="Access-Control-Expose-Headers">origin, x-requested-with, accept, content-type, nhsd-session-urid, x-my-new-header</Header>
+            <Header name="Access-Control-Expose-Headers">origin, x-requested-with, accept, content-type, nhsd-session-urid, Access-Control-Allow-Origin, x-my-new-header</Header>
             <Header name="Access-Control-Max-Age">3628800</Header>
             <Header name="Access-Control-Allow-Methods">GET, PUT, POST, DELETE</Header>
         </Headers>

proxies/sandbox/apiproxy/policies/AssignMessage.AddCors.xml

@@ -5,7 +5,7 @@
         <Headers>
             <Header name="Access-Control-Allow-Origin">*</Header>
             <Header name="Access-Control-Allow-Headers">origin, x-requested-with, accept, content-type, nhsd-session-urid, apikey</Header>
-            <Header name="Access-Control-Expose-Headers">origin, x-requested-with, accept, content-type, nhsd-session-urid, x-my-new-header</Header>
+            <Header name="Access-Control-Expose-Headers">origin, x-requested-with, accept, content-type, nhsd-session-urid, Access-Control-Allow-Origin, x-my-new-header</Header>
             <Header name="Access-Control-Max-Age">3628800</Header>
             <Header name="Access-Control-Allow-Methods">GET, PUT, POST, DELETE</Header>
         </Headers>