Other config changes are causing the passwords to be refetched, so do…

…n't refetch

 if we already have the passwords.

git-svn-id: https://svn.calendarserver.org/repository/calendarserver/CalendarServer/trunk@5443 e27351fd-9f3e-4f54-a53b-843176b1656c

twistedcaldav/stdconfig.py

@@ -848,6 +848,10 @@ def _updateNotifications(configDict):
             service["Service"] == "twistedcaldav.notify.XMPPNotifierService" and
             service["Enabled"]
         ):
+            # If we already have the password, don't fetch it again
+            if service["Password"]:
+                continue
+
             # Get password from keychain.  If not there, fall back to what
             # is in the plist.
             try:
@@ -882,6 +886,10 @@ def _updateScheduling(configDict):
 
     if service["Enabled"]:
 
+        # If we already have the password, don't fetch it again
+        if service["Password"]:
+            return
+
         # Get password for the user that is allowed to inject iMIP replies
         # to the server's /inbox; if not available, fall back to plist
         if service["Username"]: