What is Super Privileged Container SELinux Type used in Red Hat OpenShift Container Platform?

Issue

• It is observed that in Red Hat OpenShift Container Platform, the master processes require root to run the master api along with the same run with selinux context system_u:system_r:spc_t:s0.

system_u:system_r:spc_t:s0      root      11836  8.0  5.8 1657280 945772 ?      Ssl  Nov06 141:16 openshift start master api --config=/etc/origin/master/master-config.yaml --loglevel=4
system_u:system_r:spc_t:s0      root      11838  3.7  2.0 1084844 334276 ?      Ssl  Nov06  65:55 openshift start master controllers --config=/etc/origin/master/master-config.yaml --listen=https://0.0.0.0:8444 --loglevel=4

• Would like to know more about spc_t SELinux Context Type.