ConfHandler.py: Add a hook for config parsing

To make the UI settings take effect, we need to hook at the end of each
config file parsing and set UI specific values.

(Bitbake rev: f54e733c7863110896f43900d9e4e791602f9d65)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/command.py

@@ -179,6 +179,13 @@ class CommandsSync:
         """
         return bb.utils.cpu_count()
 
+    def setConfFilter(self, command, params):
+        """
+        Set the configuration file parsing filter
+        """
+        filterfunc = params[0]
+        bb.parse.parse_py.ConfHandler.confFilters.append(filterfunc)
+
 class CommandsAsync:
     """
     A class of asynchronous commands