Switch to BYOC BuildPools in internal project (dotnet/coreclr#23501)

* dnceng-linux-internal-temp -> BuildPool.Ubuntu.1604.Amd64
* dotnet-internal-temp -> BuildPool.Windows.10.Amd64.VS2017


Commit migrated from https://github.com/dotnet/coreclr/commit/3027b9d4cc4ee4637834eec99c08b16bc54b38bb

eng/xplat-job.yml

@@ -43,7 +43,8 @@ jobs:
 
       # Official Build Linux Pool
       ${{ if and(eq(parameters.osGroup, 'Linux'), ne(variables['System.TeamProject'], 'public')) }}:
-        name: dnceng-linux-internal-temp
+        name: NetCoreInternal-Int-Pool
+        queue: BuildPool.Ubuntu.1604.Amd64
 
       # FreeBSD builds only in the internal project
       ${{ if and(eq(parameters.osGroup, 'FreeBSD'), ne(variables['System.TeamProject'], 'public')) }}:
@@ -57,11 +58,12 @@ jobs:
       ${{ if and(eq(parameters.osGroup, 'OSX'), eq(variables['System.TeamProject'], 'public')) }}:
         name: Hosted MacOS
 
-      # Public Windows Build Pool
+      # Official Build Windows Pool
       ${{ if and(eq(parameters.osGroup, 'Windows_NT'), ne(variables['System.TeamProject'], 'public')) }}:
-        name: dotnet-internal-temp
+        name: NetCoreInternal-Int-Pool
+        queue: BuildPool.Windows.10.Amd64.VS2017
 
-      # Official Build Windows Pool
+      # Public Windows Build Pool
       ${{ if and(eq(parameters.osGroup, 'Windows_NT'), eq(variables['System.TeamProject'], 'public')) }}:
         name: NetCorePublic-Int-Pool
         queue: BuildPool.Windows.10.Amd64.VS2017.Open