Service environment (#23443)

* fix fileutils.TestFindFile on MacOS

* introduce model.ExternalServiceEnvironment

* pick license public key from external service env

* pick Stripe public key from external service env

* pick Rudder key from external service env

* configure Sentry DSN from external service env

* always log external_service_environment, Unsetenv

* clear faked BuildEnv, improve logging

* strip out unset GOTAGS

* fix Sentry tests

* simplify to just ServiceEnvironment

* relocate ServiceEnvironment in client config

* initialize CWS URLs based on service environment

* unset rudder key for boards dev

* harden service environment to avoid accidental production

* fix TestSentry again

* fix DEFAULT -> ENTERPRISE

* s/dev/test when naming playbooks rudder key

* simplify boards rudder key switch

* use uniform rudderKey variable names

* retain compatibility with existing pipeline

* reduce to just production/test

* unit test with valid test license

* simplify Playbooks telemetry initialization

* restore dev service environment

* emit ServiceEnvironment when running e2e tests

server/channels/app/server_test.go

@@ -395,6 +395,22 @@ func TestSentry(t *testing.T) {
 	}}
 	testDir, _ := fileutils.FindDir("tests")
 
+	setSentryDSN := func(t *testing.T, dsn *sentry.Dsn) {
+		os.Setenv("MM_SERVICEENVIRONMENT", model.ServiceEnvironmentTest)
+
+		// Allow Playbooks to startup
+		oldBuildHash := model.BuildHash
+		model.BuildHash = "dev"
+
+		oldSentryDSN := SentryDSN
+		SentryDSN = dsn.String()
+		t.Cleanup(func() {
+			os.Unsetenv("MM_SERVICEENVIRONMENT")
+			model.BuildHash = oldBuildHash
+			SentryDSN = oldSentryDSN
+		})
+	}
+
 	t.Run("sentry is disabled, should not receive a report", func(t *testing.T) {
 		data := make(chan bool, 1)
 
@@ -408,7 +424,7 @@ func TestSentry(t *testing.T) {
 		_, port, _ := net.SplitHostPort(server.Listener.Addr().String())
 		dsn, err := sentry.NewDsn(fmt.Sprintf("http://test:test@localhost:%s/123", port))
 		require.NoError(t, err)
-		SentryDSN = dsn.String()
+		setSentryDSN(t, dsn)
 
 		s, err := newServerWithConfig(t, func(cfg *model.Config) {
 			*cfg.ServiceSettings.ListenAddress = "localhost:0"
@@ -452,7 +468,7 @@ func TestSentry(t *testing.T) {
 		_, port, _ := net.SplitHostPort(server.Listener.Addr().String())
 		dsn, err := sentry.NewDsn(fmt.Sprintf("http://test:test@localhost:%s/123", port))
 		require.NoError(t, err)
-		SentryDSN = dsn.String()
+		setSentryDSN(t, dsn)
 
 		s, err := newServerWithConfig(t, func(cfg *model.Config) {
 			*cfg.ServiceSettings.ListenAddress = "localhost:0"