Lint: F821 undefined name 'config'

This variable is set after importing these files by the flaskapi module.
Thus, simply set a default at the top of each file to avoid linting
errors.

api-daemon/pvcapid/provisioner.py

@@ -37,6 +37,8 @@ import pvcapid.libvirt_schema as libvirt_schema
 
 from pvcapid.ova import list_ova
 
+config = None  # Set in this namespace by flaskapi
+
 def strtobool(stringv):
     if stringv is None:
         return False