LVA update tagname, C# namespace and few properties (#10027)

* update the lva version and few C# autorest parameters

* LVA Update C# namespace and some properties

* update tag

specification/mediaservices/data-plane/readme.md

@@ -26,15 +26,14 @@ These are the global settings for the Live video analytics API.
 
 ``` yaml
 openapi-type: data-plane
-tag: package-lva-1-0-0-preview
-opt-in-extensible-enums: true
+tag: package-lva-1-0-preview
 ```
 
 ### Tag: package-2018-07
 
-These settings apply only when `--tag=package-lva-1-0-0-preview` is specified on the command line.
+These settings apply only when `--tag=package-lva-1-0-preview` is specified on the command line.
 
-``` yaml $(tag) == 'package-lva-1-0-0-preview'
+``` yaml $(tag) == 'package-lva-1-0-preview'
 input-file:
   - LiveVideoAnalytics.Edge/preview/1.0/LiveVideoAnalytics.json
 ```
@@ -65,8 +64,8 @@ csharp:
   azure-arm: false
   payload-flattening-threshold: 2
   license-header: MICROSOFT_MIT_NO_VERSION
-  namespace: Azure.Media.LiveVideoAnalytics.Edge
-  output-folder: $(csharp-sdks-folder)/mediaservices/Azure.Media.LiveVideoAnalytics.Edge/src/Generated
+  namespace: Microsoft.Azure.Media.LiveVideoAnalytics.Edge
+  output-folder: $(csharp-sdks-folder)/mediaservices/Microsoft.Azure.Media.LiveVideoAnalytics.Edge/src/Generated
   clear-output-folder: true
   use-internal-constructors: true
   override-client-name: LiveVideoAnalyticsEdgeClient