Red Hat Single Sign-On (RH SSO) 7.6.2 deployed in OpenShift as Templates fails the Liveness and Readiness probes

Issue

After upgrading RH SSO to 7.6.2 in OpenShift (image upgrade from 7.6-17 to 7.6-20), the Liveness and Readiness Probes fails:

33s         Warning   Unhealthy        pod/sso-1-v9bdw    Readiness probe failed: INFO Creating a new DMR API probe netrc file.
ERROR Please mount a tmpfs volume at: '/mnt/rh-sso' path.
33s         Warning   Unhealthy        pod/sso-1-v9bdw    Liveness probe failed: INFO Creating a new DMR API probe netrc file.
ERROR Please mount a tmpfs volume at: '/mnt/rh-sso' path.
33s         Normal    Killing                    pod/sso-1-v9bdw                          Container sso failed liveness probe, will be restarted