The base configuration needs key expansion and anon python execution,
the parsed configurations do not. Fix this consistently, its been
broken and causing double key expansion for a while, only relised
when we started double anonymous python exeution too.
(Bitbake rev: 6138897de5ac6becf3bff56ce7a78f3ec208fcdf)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>