packaging: engine-service: remove setrlimit nofile

we install /etc/security/limits.d/10-ovirt-engine.conf with same
content, no need to do this twice.

Change-Id: I82a70741858712207752be028fbaf61a0236684f
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>
packaging: engine-service: allow service user customization

Change-Id: Ie71a3a56c77e29aea87b955dc82cd194e88c3582
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>
packaging: engine-setup re-write using otopi

Change-Id: I4d5e3ac7927802326e324c9b98ada75b421638aa
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>
Signed-off-by: Sandro Bonazzola <sbonazzo@redhat.com>
Signed-off-by: Alex Lourie <alourie@redhat.com>