Makefile: set e2e test timeout to 1 hour

Previously we were using the default, which even if equal to 0, still
means 10 minute timout in practice (with the way we run the tests with
invoking go test directly). With the addition of latest e2e tests we
hit the limit and got bitten by it. Set the timeout to 1 hour which
should be enough for anyone...

Makefile

@@ -193,12 +193,14 @@ e2e-test:
 	    -nfd.e2e-config=$(E2E_TEST_CONFIG) \
 	    -nfd.pull-if-not-present=$(E2E_PULL_IF_NOT_PRESENT) \
 	    -ginkgo.focus="\[kubernetes-sigs\]" \
+	    -test.timeout=1h \
 	    $(if $(OPENSHIFT),-nfd.openshift,)
 	$(GO_CMD) test -v ./test/e2e/ -args -nfd.repo=$(IMAGE_REPO) -nfd.tag=$(IMAGE_TAG_NAME)-full \
 	    -kubeconfig=$(KUBECONFIG) \
 	    -nfd.e2e-config=$(E2E_TEST_CONFIG) \
 	    -nfd.pull-if-not-present=$(E2E_PULL_IF_NOT_PRESENT) \
 	    -ginkgo.focus="\[kubernetes-sigs\]" \
+	    -test.timeout=1h \
 	    $(if $(OPENSHIFT),-nfd.openshift,)
 
 push: