[COMMON] Make mongo run as non-root

Use our helper template and k8s features to make mongodb run as a
non-root user as per Guiling requirements.

Issue-ID: DCAEGEN2-2424
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Change-Id: I44bc079a2cc49dc1b0f1da88e220290098e909d5
2 files changed