Skip local+cloud tests on cloud when run on PRs (#4531)

## Changes

- Only run integration tests on PRs if they don't have local
counterpart.
- Replace -skiplocal option with DATABRICKS_TEST_SKIPLOCAL env var so
that multiple test packages can be run together

## Why 

The integration tests are now taking more than >1.5h. This drops the
time back to 10m. Once we convert more tests from cloud-only to
cloud+local (like #4507) we'll
drop it further until eventually it becomes 0.

All tests will still run on cloud on main, so they act as async check
that testserver implementation matches cloud well enough.

---------

Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: denik

Makefile

@@ -93,7 +93,7 @@ generate-out-test-toml:
 
 # Updates acceptance test output (integration tests, requires access)
 test-update-aws:
-	deco env run -i -n aws-prod-ucws -- go test ./acceptance -run ^TestAccept$$ -update -timeout=1h -skiplocal -v
+	deco env run -i -n aws-prod-ucws -- env DATABRICKS_TEST_SKIPLOCAL=1 go test ./acceptance -run ^TestAccept$$ -update -timeout=1h -v
 
 test-update-all: test-update test-update-aws
 
@@ -145,7 +145,7 @@ integration:
 	$(INTEGRATION)
 
 integration-short:
-	VERBOSE_TEST=1 $(INTEGRATION) -short
+	DATABRICKS_TEST_SKIPLOCAL=1 VERBOSE_TEST=1 $(INTEGRATION) -short
 
 dbr-integration:
 	DBR_ENABLED=true go test -v -timeout 4h -run TestDbrAcceptance$$ ./acceptance

acceptance/acceptance_test.go

@@ -43,7 +43,6 @@ var (
 	Forcerun        bool
 	LogRequests     bool
 	LogConfig       bool
-	SkipLocal       bool
 	UseVersion      string
 	WorkspaceTmpDir bool
 	OnlyOutTestToml bool
@@ -72,7 +71,6 @@ func init() {
 	flag.BoolVar(&Forcerun, "forcerun", false, "Force running the specified tests, ignore all reasons to skip")
 	flag.BoolVar(&LogRequests, "logrequests", false, "Log request and responses from testserver")
 	flag.BoolVar(&LogConfig, "logconfig", false, "Log merged for each test case")
-	flag.BoolVar(&SkipLocal, "skiplocal", false, "Skip tests that are enabled to run on Local")
 	flag.StringVar(&UseVersion, "useversion", "", "Download previously released version of CLI and use it to run the tests")
 
 	// DABs in the workspace runs on the workspace file system. This flags does the same for acceptance tests
@@ -410,8 +408,8 @@ func getSkipReason(config *internal.TestConfig, configPath string) string {
 		config.Cloud = config.CloudSlow
 	}
 
-	if SkipLocal && isTruePtr(config.Local) {
-		return "Disabled via SkipLocal setting in " + configPath
+	if os.Getenv("DATABRICKS_TEST_SKIPLOCAL") != "" && isTruePtr(config.Local) {
+		return "Disabled via DATABRICKS_TEST_SKIPLOCAL environment variable in " + configPath
 	}
 
 	if Forcerun {