test/common: re-enable unittest-valgrind-container-autotest

see https://github.com/spdk/spdk-ci/pull/103



Change-Id: Ie886ec63a2f6e4a2b8a0a37581d7ed538c426cfd
Signed-off-by: Boris Glimcher <Boris.Glimcher@emc.com>
Reviewed-on: https://review.spdk.io/c/spdk/spdk/+/26739


Tested-by: SPDK Automated Test System <spdkbot@gmail.com>
Reviewed-by: Karol Latecki <karol.latecki@nutanix.com>
Reviewed-by: Tomasz Zawadzki <tomasz@tzawadzki.com>
Reviewed-by: Konrad Sztyber <ksztyber@nvidia.com>
Reviewed-by: Michal Berger <michal.berger@nutanix.com>