BUG#11132 Connections stuck in CLOSE_WAIT

This fixes the problem in 5.0 in the correct way.

The previous patch (for 4.1) is only valid for 4.1 and is done at the right time
for 4.1.

ndb/src/kernel/main.cpp

@@ -101,6 +101,12 @@ int main(int argc, char** argv)
      */
     catchsigs(true);
 
+    /**
+     * We no longer need the mgm connection in this process
+     * (as we are the angel, not ndb)
+     */
+    theConfig->closeConfiguration();
+
     int status = 0;
     while(waitpid(child, &status, 0) != child);
     if(WIFEXITED(status)){