chore: use environment variable instead of build tags to control e2e (#3179)

Makefile

@@ -224,7 +224,7 @@ run-querygen:
 ###############################################################################
 
 PACKAGES_UNIT=$(shell go list ./... | grep -E -v 'tests/simulator|e2e')
-PACKAGES_E2E=$(shell go list -tags e2e ./... | grep '/e2e')
+PACKAGES_E2E=$(shell go list ./... | grep '/e2e')
 PACKAGES_SIM=$(shell go list ./... | grep '/tests/simulator')
 TEST_PACKAGES=./...
 
@@ -261,25 +261,25 @@ test-sim-bench:
 # In that case, run `make e2e-remove-resources`
 # manually.
 # Utilizes Go cache.
-test-e2e: e2e-setup test-e2e-ci
+test-e2e: OSMOSIS_E2E=True e2e-setup test-e2e-ci
 
 # test-e2e-ci runs a full e2e test suite
 # does not do any validation about the state of the Docker environment
 # As a result, avoid using this locally.
 test-e2e-ci:
-	@VERSION=$(VERSION) OSMOSIS_E2E_DEBUG_LOG=True OSMOSIS_E2E_UPGRADE_VERSION=$(E2E_UPGRADE_VERSION)  go test -tags e2e -mod=readonly -timeout=25m -v $(PACKAGES_E2E)
+	@VERSION=$(VERSION) OSMOSIS_E2E=True OSMOSIS_E2E_DEBUG_LOG=True OSMOSIS_E2E_UPGRADE_VERSION=$(E2E_UPGRADE_VERSION)  go test -mod=readonly -timeout=25m -v $(PACKAGES_E2E)
 
 # test-e2e-debug runs a full e2e test suite but does
 # not attempt to delete Docker resources at the end.
 test-e2e-debug: e2e-setup
-	@VERSION=$(VERSION) OSMOSIS_E2E_UPGRADE_VERSION=$(E2E_UPGRADE_VERSION) OSMOSIS_E2E_SKIP_CLEANUP=True go test -tags e2e -mod=readonly -timeout=25m -v $(PACKAGES_E2E) -count=1
+	@VERSION=$(VERSION) OSMOSIS_E2E=True OSMOSIS_E2E_UPGRADE_VERSION=$(E2E_UPGRADE_VERSION) OSMOSIS_E2E_SKIP_CLEANUP=True go test -mod=readonly -timeout=25m -v $(PACKAGES_E2E) -count=1
 
 # test-e2e-short runs the e2e test with only short tests.
 # Does not delete any of the containers after running.
 # Deletes any existing containers before running.
 # Does not use Go cache.
 test-e2e-short: e2e-setup
-	@VERSION=$(VERSION) OSMOSIS_E2E_DEBUG_LOG=True OSMOSIS_E2E_SKIP_UPGRADE=True OSMOSIS_E2E_SKIP_IBC=True OSMOSIS_E2E_SKIP_STATE_SYNC=True OSMOSIS_E2E_SKIP_CLEANUP=True go test -tags e2e -mod=readonly -timeout=25m -v $(PACKAGES_E2E) -count=1
+	@VERSION=$(VERSION) OSMOSIS_E2E=True OSMOSIS_E2E_DEBUG_LOG=True OSMOSIS_E2E_SKIP_UPGRADE=True OSMOSIS_E2E_SKIP_IBC=True OSMOSIS_E2E_SKIP_STATE_SYNC=True OSMOSIS_E2E_SKIP_CLEANUP=True go test -mod=readonly -timeout=25m -v $(PACKAGES_E2E) -count=1
 
 test-mutation:
 	@bash scripts/mutation-test.sh $(MODULES)

tests/e2e/e2e_setup_test.go

-//go:build e2e
-// +build e2e
-
 package e2e
 
 import (
@@ -15,6 +12,8 @@ import (
 )
 
 const (
+	// Environment variable signifying whether to run e2e tests.
+	e2eEnabledEnv = "OSMOSIS_E2E"
 	// Environment variable name to skip the upgrade tests
 	skipUpgradeEnv = "OSMOSIS_E2E_SKIP_UPGRADE"
 	// Environment variable name to skip the IBC tests
@@ -40,6 +39,10 @@ type IntegrationTestSuite struct {
 }
 
 func TestIntegrationTestSuite(t *testing.T) {
+	isEnabled := os.Getenv(e2eEnabledEnv)
+	if isEnabled != "True" {
+		t.Skip(fmt.Sprintf("e2e test is disabled. To run, set %s to True", e2eEnabledEnv))
+	}
 	suite.Run(t, new(IntegrationTestSuite))
 }
 

tests/e2e/e2e_test.go

-//go:build e2e
-// +build e2e
-
 package e2e
 
 import (

tests/e2e/initialization/init_test.go

-//go:build e2e
-// +build e2e
-
 package initialization_test
 
 import (