TT#7515 Remove xml symbols from the generated sip passwords

To avoid XML errors in the xml device configs

Change-Id: I9450ce193735a2a4d597b47815da9d08a54b55b1

lib/NGCP/Panel/Utils/Subscriber.pm

@@ -206,6 +206,8 @@ sub create_subscriber {
             -minnum => 1, -minlower => 1, -minupper => 1, -minspecial => 1,
             -distribute => 1, -fatal => 1,
         );
+        #otherwise it breaks xml device configs
+        $params->{password} =~s/[<>&]/,/g;
     }
     if($c->config->{security}->{password_web_autogenerate} && !$params->{webpassword}) {
         $params->{webpassword} = String::MkPasswd::mkpasswd(