make flake attempts an optional parameter (#3330)

Signed-off-by: Per Goncalves da Silva <pegoncal@redhat.com>
Co-authored-by: Per Goncalves da Silva <pegoncal@redhat.com>

Makefile

@@ -247,8 +247,7 @@ E2E_TIMEOUT ?= 90m
 E2E_TEST_NS ?= operators
 E2E_INSTALL_NS ?= operator-lifecycle-manager
 E2E_CATALOG_NS ?= $(E2E_INSTALL_NS)
-E2E_FLAKE_ATTEMPTS ?= 1
-GINKGO_OPTS += -v -randomize-suites -race -trace --show-node-events --flake-attempts=$(E2E_FLAKE_ATTEMPTS) $(if $(E2E_SEED),-seed '$(E2E_SEED)') $(if $(TEST),-focus '$(TEST)',) $(if $(SKIP), -skip '$(SKIP)')
+GINKGO_OPTS += -v -randomize-suites -race -trace --show-node-events $(if $(E2E_FLAKE_ATTEMPTS),--flake-attempts='$(E2E_FLAKE_ATTEMPTS)') $(if $(E2E_SEED),-seed '$(E2E_SEED)') $(if $(TEST),-focus '$(TEST)',) $(if $(SKIP), -skip '$(SKIP)')
 
 .PHONY: e2e
 e2e: #HELP Run e2e tests against a cluster running OLM (params: $E2E_TEST_NS (operator), $E2E_INSTALL_NS (operator-lifecycle-manager), $E2E_CATALOG_NS (operator-lifecycle-manager), $E2E_TIMEOUT (90m), $E2E_FLAKE_ATTEMPTS (1), $TEST(undefined))