crypto: testmgr - mark rfc4106(gcm(aes)) as fips_allowed

This gcm variant is popular for ipsec use, and there are folks who would
like to use it while in fips mode. Mark it with fips_allowed=1 to
facilitate that.

CC: LKML <linux-kernel@vger.kernel.org>
CC: Stephan Mueller <smueller@atsec.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Acked-by: Stephan Mueller <smueller@atsec.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>