Add make targets gen-golden-all and golden-diff-all

These targets use a static list of test instances in make variable
`test_instances`. The contents of this variable are generated from the
modulesync parameter `testMatrix.entries`.

We use a generic recursive make target based on the `test_instances`
make variable to implement the new targets. This allows us to reuse the
existing `golden-diff` and `gen-golden` targets.

The new targets are only added for components which have golden and
matrix tests configured and which have migrated their matrix test
configuration to modulesync parameter `testMatrix`.

moduleroot/Makefile.erb

@@ -75,6 +75,20 @@ gen-golden: clean .compile ## Update the reference version for target `golden-di
 golden-diff: commodore_args += -f tests/$(instance).yml
 golden-diff: clean .compile ## Diff compile output against the reference version. Review output and run `make gen-golden golden-diff` if this target fails.
 	@git diff --exit-code --minimal --no-index -- tests/golden/$(instance) compiled/
+<%- if !@configs['testMatrix'].empty? && !@configs['testMatrix']['entries'].empty? -%>
+
+.PHONY: golden-diff-all
+golden-diff-all: recursive_target=golden-diff
+golden-diff-all: $(test_instances) ## Run golden-diff for all instances. Note: this doesn't work when running make with multiple parallel jobs (-j != 1).
+
+.PHONY: gen-golden-all
+gen-golden-all: recursive_target=gen-golden
+gen-golden-all: $(test_instances) ## Run gen-golden for all instances. Note: this doesn't work when running make with multiple parallel jobs (-j != 1).
+
+.PHONY: $(test_instances)
+$(test_instances):
+	$(MAKE) $(recursive_target) -e instance=$(basename $(@F))
+<%- end -%>
 <%- end -%>
 
 .PHONY: clean

moduleroot/Makefile.vars.mk.erb

@@ -34,3 +34,6 @@ COMMODORE_CMD  ?= $(DOCKER_CMD) $(DOCKER_ARGS) $(root_volume) docker.io/projects
 JB_CMD         ?= $(DOCKER_CMD) $(DOCKER_ARGS) --entrypoint /usr/local/bin/jb docker.io/projectsyn/commodore:latest install
 
 instance ?= defaults
+<%- if @configs['feature_goldenTests'] && !@configs['testMatrix'].empty? && !@configs['testMatrix']['entries'].empty? -%>
+test_instances =<%- @configs['testMatrix']['entries'].each do |entry| %> tests/<%= entry %>.yml<% end %>
+<%- end -%>