images/server: make it easier to do custom package builds #1618

Job	Run time
check-commits	7s
build-client (centos, amd64)	46s
build-client (fedora, amd64)	55s
build-server (default, centos, amd64)	1m 34s
build-client (opensuse, amd64)	43s
build-ad-server (default, fedora, amd64)	1m 22s
build-server (default, fedora, amd64)	1m 8s
checks	4s
build-ad-server (default, opensuse, amd64)	1m 0s
build-server (default, opensuse, amd64)	50s
build-ad-server (nightly, centos, amd64)	1m 59s
build-server (nightly, centos, amd64)	1m 41s
build-ad-server (nightly, fedora, amd64)	1m 28s
build-server (nightly, fedora, amd64)	1m 3s
build-server (devbuilds, centos, amd64)	2m 2s
build-toolbox (centos, amd64)	1m 0s
build-toolbox (fedora, amd64)	45s
build-toolbox (opensuse, amd64)	55s
test-ad-server-kubernetes (default, fedora, amd64)	1m 53s
test-server (default, centos, amd64)	15s
test-ad-server-kubernetes (default, opensuse, amd64)	1m 32s
test-server (default, fedora, amd64)	17s
test-ad-server-kubernetes (nightly, centos, amd64)	1m 30s
test-ad-server-kubernetes (nightly, fedora, amd64)	1m 38s
test-server (default, opensuse, amd64)	19s
test-server (nightly, centos, amd64)	23s
test-server (nightly, fedora, amd64)	18s
test-server (devbuilds, centos, amd64)	23s
push	0s
	27m 50s

Provide feedback