BB_SERVER_TIMEOUT=100 oe-selftest -r bblayers
was failing and highlighted that since parseConfiguation clears data
structures, it needs to also clear parsecache_valid as it no longer
contains correct data.
(Bitbake rev: 7234f33a7eb38ad51a8345f6689bc26e29f29f92)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>