[RHOCP 4.x] No capabilities were dropped for a pod when using `requiredDropCapabilities= ALL`

Issue

• While trying to drop all capabilities of a pod, in the RHOCP v4.6 or v4.7 cluster, no capabilities were getting dropped.

// In RHOCP v4.6 and v4.7 no capabilities were dropped as can be seen from the "Current and Bounding set"

$ oc exec -it <pod-name> -- capsh --print

Current: = cap_chown,cap_dac_override,cap_fowner,cap_fsetid,cap_setpcap,cap_net_bind_service+i
Bounding set =cap_chown,cap_dac_override,cap_fowner,cap_fsetid,cap_setpcap,cap_net_bind_service
.
.

// In RHOCP v4.9 and v4.9, the capabilities were dropped  as expected when using `requiredDropCapabilities= ALL`

$ oc exec -it <pod-name> -- capsh --print
Current: =                                           <<<<<<<< Pod Capabilities were dropped
Bounding set =                                       <<<<<<<< Pod Capabilities were dropped
.
.

• TherequiredDropCapabilities= all is working in RHOCP v4.8 and v4.9 and not working in RHOCP v4.6 and v4.7