Merge pull request #57847 from thegreenbear/keepalived-security-context

cephadm/services/ingress: configure security user in keepalived template

Reviewed-by: Adam King <adking@redhat.com>
Reviewed-by: John Mulligan <jmulligan@redhat.com>

diff --cc src/pybind/mgr/cephadm/tests/test_services.py
Simple merge