Update git submodules

* Update docs/submodules/portal.git from branch 'master'
  to 6d6508031238b16d153d76b0f68ad7f27d90012c
  - HealthCheck & Namespace Check
    
    Issue-ID: PORTAL-723
    Change-Id: I97ac3c592ae1f7a6142384d70ac6038ccee1d8fb
    Signed-off-by: statta <statta@research.att.com>
    
1 file changed