bitbake: bin/bitbake/cooker: Ensure initial featureset is optimal

bitbake: bin/bitbake/cooker: Ensure initial featureset is optimal

If the featureset didn't match the defaults, we'd pay the price of two
base configuration parses which showed up adversely in the performance
benchmarks. This also passes the feature set into the cooker creation so
in the common case we don't have to reset the server. This speeds up
both knotty and hob startup. If the featureset doesn't match, the system
will reset as before, this just streamlines the common case.

(Bitbake rev: 1249543c4dbf3edeac033d888497864cfc807a4e)

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