Move build jobs to hosted pools (#22)

* Move build jobs to the Hosted VS2017 pool instead of our internal pool
* Move the prepare-release-internalonly job from a team-specific pool to a shared pool with more capacity
* Remove symbol publishing from PR/CI builds since it's not necessary; do it only in release builds

build/pipelines/templates/build-app-internal.yaml

@@ -12,11 +12,7 @@ jobs:
   displayName: Build ${{ parameters.platform }}
   condition: ${{ parameters.condition }}
   pool:
-    name: Package ES Custom Demands Lab A
-    demands:
-    - msbuild
-    - visualstudio
-    - ClientAlias -equals PKGESUTILAPPS
+    vmImage: vs2017-win2016
   variables:
     BuildConfiguration: Release
     BuildPlatform: ${{ parameters.platform }}
@@ -39,6 +35,15 @@ jobs:
     parameters:
       extraMsBuildArgs: '/p:IsStoreBuild=true'
 
+  - task: PublishSymbols@2
+    displayName: Publish symbols
+    inputs:
+      symbolsFolder: $(Build.BinariesDirectory)\$(BuildConfiguration)\$(BuildPlatform)
+      searchPattern: '**/*.pdb'
+      symbolServerType: teamServices
+      treatNotIndexedAsWarning: true
+      symbolsArtifactName: $(System.teamProject)/$(Build.BuildNumber)_$(BuildPlatform)$(BuildConfiguration)
+
   - task: securedevelopmentteam.vss-secure-development-tools.build-task-binskim.BinSkim@3
     displayName: Run BinSkim
     inputs: