Use temporary rpmdb when importing gpg public key and checking rpm
signature. This patch should fix a problem where test_signing_packages()
sometimes fails with
"pmdb: BDB1540 configured environment flags incompatible with existing
environment"
(From OE-Core rev: e2ddf409f405ab570ea7f6ed87180789b3a54607)
Signed-off-by: Markus Lehtonen <markus.lehtonen@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
a84058826d