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/public/model/config.go

@@ -2860,14 +2860,18 @@ type CloudSettings struct {
 
 func (s *CloudSettings) SetDefaults() {
 	if s.CWSURL == nil {
-		s.CWSURL = NewString(CloudSettingsDefaultCwsURL)
-		if !isProdLicensePublicKey {
+		switch GetServiceEnvironment() {
+		case ServiceEnvironmentProduction:
+			s.CWSURL = NewString(CloudSettingsDefaultCwsURL)
+		case ServiceEnvironmentTest, ServiceEnvironmentDev:
 			s.CWSURL = NewString(CloudSettingsDefaultCwsURLTest)
 		}
 	}
 	if s.CWSAPIURL == nil {
-		s.CWSAPIURL = NewString(CloudSettingsDefaultCwsAPIURL)
-		if !isProdLicensePublicKey {
+		switch GetServiceEnvironment() {
+		case ServiceEnvironmentProduction:
+			s.CWSAPIURL = NewString(CloudSettingsDefaultCwsAPIURL)
+		case ServiceEnvironmentTest, ServiceEnvironmentDev:
 			s.CWSAPIURL = NewString(CloudSettingsDefaultCwsAPIURLTest)
 		}
 	}