fix activation token location

For backend we have workspace in project and token on default location.
For tests I want to have option to use token from non default location.
And to enable testing with workspace without token.

domain/file_store.go

@@ -115,7 +115,7 @@ func AppConfigDir() (string, error) {
 }
 
 func StoreActivationToken(jwt string) error {
-	dir, _, err := WorkspacePathAndName()
+	dir, err := activationTokenPath()
 	if err != nil {
 		return err
 	}
@@ -128,7 +128,7 @@ func StoreActivationTokenTo(jwt string, dir string) error {
 }
 
 func ReadActivationToken() (string, error) {
-	dir, _, err := WorkspacePathAndName()
+	dir, err := activationTokenPath()
 	if err != nil {
 		return "", err
 	}
@@ -143,6 +143,13 @@ func ReadActivationToken() (string, error) {
 	return string(buf), nil
 }
 
+func activationTokenPath() (string, error) {
+	if val, ok := os.LookupEnv(EnvWorkspacePath); ok {
+		return val, nil
+	}
+	return AppConfigDir()
+}
+
 func WorkspacePathAndName() (string, string, error) {
 	// workspace pats set from env, used in end_to_end test
 	if val, ok := os.LookupEnv(EnvWorkspacePath); ok {