[2]Cherry Pick for 4.1.0-preview2 (#525)

* Unit tests and Improved handling for SSL PEM attributes (#520)

* Adding Trigger Attribute test for ssl

* Adding UTs for Kafka Scaler Provider and code cleanup

* Scale Metric and Scale Provider Fixes (#521)

* Adding Trigger Attribute test for ssl

* Adding UTs for Kafka Scaler Provider and code cleanup

* Scale Metric and Scale Controller Fixes

* Fixing Incorrect UTs

* Updating version to 4.1.0-preview2 (#522)

* Removing Lower limit on Scaling for Extension Target Scaler (#524)

src/Microsoft.Azure.WebJobs.Extensions.Kafka/Listeners/Scaler/KafkaGenericTargetScaler.cs

@@ -81,7 +81,7 @@ internal TargetScalerResult GetScaleResultInternal(TargetScalerContext context,
             {
                 return new TargetScalerResult
                 {
-                    TargetWorkerCount = 1
+                    TargetWorkerCount = 0
                 };
             }
 
@@ -155,4 +155,4 @@ internal int GetChangeInWorkerCount(int targetWorkerCount)
             return targetWorkerCount - lastTargetScalerResult.TargetWorkerCount;
         }
     }
-}
+}