Adding federated token logs & optional audience parameter (#159)

* cherry pick changes

* added audience field option in input params

* added js

* removed extra spaces

* Adding logs to surface AZ-CLI and powershell errors (#171)

* removing token logs

lib/PowerShell/ServicePrincipalLogin.js

@@ -59,10 +59,18 @@ class ServicePrincipalLogin {
     login() {
         return __awaiter(this, void 0, void 0, function* () {
             let output = "";
+            let commandStdErr = false;
             const options = {
                 listeners: {
                     stdout: (data) => {
                         output += data.toString();
+                    },
+                    stderr: (data) => {
+                        let error = data.toString();
+                        if (error && error.trim().length !== 0) {
+                            commandStdErr = true;
+                            core.error(error);
+                        }
                     }
                 }
             };