Split tmt plans into separate zuul jobs

This should improve the experience by having separate clickable
links for each test matrix item and see the pass/fail more early.
Also make Testing Farm scale better as it uses separate TF requests
for testing.

Signed-off-by: Miroslav Vadkerti <mvadkert@redhat.com>

Makefile

@@ -0,0 +1,16 @@
+.DEFAULT_GOAL := help
+
+# https://www.gnu.org/software/make/manual/html_node/Force-Targets.html#Force-Targets
+.FORCE:
+
+# List of architectures to be tested
+ARCHES = x86_64 aarch64
+
+generate-zuul-config: .FORCE  ## Generate zuul configuration from list of tmt plans
+	jinja2 -D arches="$(ARCHES)" -D plans="$$(tmt plan ls | tr '\n' ' ')" .zuul.yaml.j2 -o .zuul.yaml
+
+# See https://www.thapaliya.com/en/writings/well-documented-makefiles/ for details.
+reverse = $(if $(1),$(call reverse,$(wordlist 2,$(words $(1)),$(1)))) $(firstword $(1))
+
+help: .FORCE  ## Show this help
+	@awk 'BEGIN {FS = ":.*##"; printf "$(info $(PRELUDE))"} /^[a-zA-Z_/-]+:.*?##/ { printf "  \033[36m%-35s\033[0m %s\n", $$1, $$2 } /^##@/ { printf "\n\033[1m%s\033[0m\n", substr($$0, 5) } ' $(call reverse, $(MAKEFILE_LIST))