Changed build name template and limited number of parallel jobs.

.azure/azure-pipelines.yml

@@ -1,4 +1,4 @@
-name: $(Date:yyyyMMdd).$(Rev:.r)
+name: $(Date:yyyyMMdd)$(Rev:.r)
 
 variables:
   - name: TestProjects
@@ -26,6 +26,7 @@ jobs:
           BuildConfiguration: Release
         debug:
           BuildConfiguration: Debug
+      maxParallel: 2
     steps:
     - checkout: self
       clean: false
@@ -116,6 +117,7 @@ jobs:
         Common:
           NugetPackageName: Jellyfin.Common
           AssemblyFileName: MediaBrowser.Common.dll
+      maxParallel: 2
     steps:
     - checkout: none