Resolve "Update PowerDMS metadata to use persistent nameid"

Closes #90 (closed)

nefed.xml

@@ -13538,7 +13538,7 @@ KNGked4df0r1o5CozJ35FjKx1fiYucuvGXU+UZd5Yg6sF6MRhQqud32X3eOFJXS/ndm/jGit7B6A
             </mdui:UIInfo>
         </Extensions>
         <SPSSODescriptor AuthnRequestsSigned="false" WantAssertionsSigned="false" protocolSupportEnumeration="urn:oasis:names:tc:SAML:2.0:protocol">
-            <NameIDFormat>urn:oasis:names:tc:SAML:1.1:nameid-format:unspecified</NameIDFormat>
+            <NameIDFormat>urn:oasis:names:tc:SAML:2.0:nameid-format:persistent</NameIDFormat>
             <AssertionConsumerService Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST"
                 Location="https://accounts.powerdms.com/login/callback?connection=3720-saml-connection"
                 index="1" />