bitbake: command: Fix some bugs identified by BB_SERVER_TIMEOUT

The 'needconfig' flag was meant to be the default as most commands do need
it and the "False" cases were the exception. The code was written backwards
with a default False value. Invert this to match the intent, resulting in
the config being reparsed if metadata has changed.

Also ensure the second level configuration is parsed for the getLayerPriorities
command as otherwise it can return stale info.

With these changes:

BB_SERVER_TIMEOUT=100 oe-selftest -r bblayers.BitbakeLayers.test_bitbakelayers_add_remove

passes instead of fails.

(Bitbake rev: af3c8928a69f204d5ced02c947485990ac04a776)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/command.py

@@ -79,7 +79,7 @@ class Command:
                     return None, "Not able to execute not readonly commands in readonly mode"
             try:
                 self.cooker.process_inotify_updates()
-                if getattr(command_method, 'needconfig', False):
+                if getattr(command_method, 'needconfig', True):
                     self.cooker.updateCacheSync()
                 result = command_method(self, commandline)
             except CommandError as exc:
@@ -283,6 +283,7 @@ class CommandsSync:
     parseConfiguration.needconfig = False
 
     def getLayerPriorities(self, command, params):
+        command.cooker.parseConfiguration()
         ret = []
         # regex objects cannot be marshalled by xmlrpc
         for collection, pattern, regex, pri in command.cooker.bbfile_config_priorities: