create-user-key-store.sh: support gpg 2.x used to generate rpm signing key
create-user-key-store.sh: support gpg 2.x used to generate rpm signing key

Signed-off-by: Jia Zhang <881c3d214edc0ccdafacc6349926bfb98831f3b8@gmail.com>

jiazhang0/meta-secure-core,jiazhang0/meta-secure-core,jiazhang0/meta-secure-core,jiazhang0/meta-secure-core