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/utils/license.go

@@ -74,6 +74,13 @@ func (l *LicenseValidatorImpl) ValidateLicense(signed []byte) (bool, string) {
 	plaintext := decoded[:len(decoded)-256]
 	signature := decoded[len(decoded)-256:]
 
+	var publicKey []byte
+	switch model.GetServiceEnvironment() {
+	case model.ServiceEnvironmentProduction:
+		publicKey = productionPublicKey
+	case model.ServiceEnvironmentTest, model.ServiceEnvironmentDev:
+		publicKey = testPublicKey
+	}
 	block, _ := pem.Decode(publicKey)
 
 	public, err := x509.ParsePKIXPublicKey(block.Bytes)