[redhat] Update scripts to put new configs under ark-common

The current automated workflow creates new kernel config items in a pending-common/generic directory and produces an MR which proposes moving them to common/generic.

These are config settings for ARK so really we should use a pending-ark directory and propose moving them to the ark/generic directory.

Update the relevant scripts and documentation to take care of this.

Signed-off-by: Patrick Talbert ptalbert@redhat.com