Support multiple skip option for E2E test

The GINKGO_SKIP option is updated to string that can be separated by "." for "make test-e2e".

Signed-off-by: Xun Jiang <jxun@vmware.com>

changelogs/unreleased/4725-jxun

@@ -0,0 +1 @@
+Support multiple skip option for E2E test

test/e2e/Makefile

@@ -47,6 +47,7 @@ KUSTOMIZE := $(TOOLS_BIN_DIR)/kustomize
 OUTPUT_DIR := _output/$(GOOS)/$(GOARCH)/bin
 GINKGO_FOCUS ?=
 GINKGO_SKIP ?=
+SKIP_STR := $(foreach var, $(subst ., ,$(GINKGO_SKIP)),-skip "$(var)")
 VELERO_CLI ?=$$(pwd)/../../_output/bin/$(GOOS)/$(GOARCH)/velero
 VELERO_IMAGE ?= velero/velero:main
 VELERO_VERSION ?= $(VERSION)
@@ -86,7 +87,7 @@ run: ginkgo
 			(echo "Bucket to store the backups from E2E tests is required, please re-run with BSL_BUCKET=<BucketName>"; exit 1 )
 		@[ "${CLOUD_PROVIDER}" ] && echo "Using cloud provider ${CLOUD_PROVIDER}" || \
 			(echo "Cloud provider for target cloud/plug-in provider is required, please rerun with CLOUD_PROVIDER=<aws,azure,kind,vsphere>"; exit 1)
-	@$(GINKGO) -v -focus="$(GINKGO_FOCUS)" -skip="$(GINKGO_SKIP)" . -- -velerocli=$(VELERO_CLI) \
+	@$(GINKGO) -v -focus="$(GINKGO_FOCUS)" $(SKIP_STR) . -- -velerocli=$(VELERO_CLI) \
 		-velero-image=$(VELERO_IMAGE) \
 		-plugins=$(PLUGINS) \
 		-velero-version=$(VELERO_VERSION) \