Log the username originating the request that is being denied (#651)
Log the username originating the request that is being denied (#651)

Signed-off-by: Jose Luis Pedrosa <7bc3425e6c5e8c1af2af65d96f5c90fde7fb57bf@gmail.com>
open-policy-agent/gatekeeper,open-policy-agent/gatekeeper,open-policy-agent/gatekeeper,open-policy-agent/gatekeeper,open-policy-agent/gatekeeper