Move the local only usehead test to the FetcherLocalTest class so it
will be run when BB_SKIP_NETTESTS=yes since it does not require
network access.
Rename the usehead tests to better match the new organization.
(Bitbake rev: 137cfa13d5319bc91c3e5fe6c7062cb8c8484d64)
Signed-off-by: Joey Degges <jdegges@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>