Add test-e2e-contribs

Signed-off-by: Nelo-T. Wallus <red.brush9525@fastmail.com>
Signed-off-by: Nelo-T. Wallus <n.wallus@sap.com>

Author: ntnn

Makefile

@@ -108,6 +108,9 @@ LDFLAGS := \
 	-X k8s.io/component-base/version.gitMajor=${KUBE_MAJOR_VERSION} \
 	-X k8s.io/component-base/version.gitMinor=${KUBE_MINOR_VERSION} \
 	-X k8s.io/component-base/version.buildDate=${BUILD_DATE}
+
+CONTRIBS ?= $(patsubst contrib/%,%,$(wildcard contrib/*))
+
 all: build
 .PHONY: all
 
@@ -278,6 +281,14 @@ test-e2e: $(KCP) $(DEX) build ## Run e2e tests
 	echo "Waiting for kcp to be ready (check .kcp/kcp.log)." && while ! KUBECONFIG=.kcp/admin.kubeconfig kubectl get --raw /readyz &>/dev/null; do sleep 1; echo -n "."; done && echo && \
 	KUBECONFIG=$$PWD/.kcp/admin.kubeconfig GOOS=$(OS) GOARCH=$(ARCH) $(GO_TEST) -race -count $(COUNT) -p $(E2E_PARALLELISM) -parallel $(E2E_PARALLELISM) $(WHAT) $(TEST_ARGS)
 
+CONTRIBS_E2E := $(patsubst %,test-e2e-contrib-%,$(CONTRIBS))
+
+.PHONY: test-e2e-contribs $(CONTRIBS_E2E)
+test-e2e-contribs: $(CONTRIBS_E2E) ## Run e2e tests for external integrations
+test-e2e-contrib-kcp: $(KCP)
+test-e2e-contrib-%:
+	cd contrib/$* && $(GO_TEST) -race -count $(COUNT) -p $(E2E_PARALLELISM) -parallel $(E2E_PARALLELISM) ./test/e2e/...
+
 .PHONY: test
 ifdef USE_GOTESTSUM
 test: $(GOTESTSUM)