New build pools (#6041)

Author: michaelgsharp

build/vsts-ci.yml

@@ -24,7 +24,7 @@ jobs:
     DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
     DOTNET_MULTILEVEL_LOOKUP: 0
   pool:
-    name: DotNet-Build
+    name: DotnetBuild-1ES-Linux
     demands:
     - agent.os -equals linux
   container: CentosContainer
@@ -55,7 +55,7 @@ jobs:
     DOTNET_MULTILEVEL_LOOKUP: 0
     ROOTFS_DIR: '/crossrootfs/arm'
   pool:
-    name: DotNet-Build
+    name: DotnetBuild-1ES-Linux
     demands:
     - agent.os -equals linux
   container: UbuntuCrossArmContainer
@@ -86,7 +86,7 @@ jobs:
     DOTNET_MULTILEVEL_LOOKUP: 0
     ROOTFS_DIR: '/crossrootfs/arm64'
   pool:
-    name: DotNet-Build
+    name: DotnetBuild-1ES-Linux
     demands:
     - agent.os -equals linux
   container: UbuntuCrossArm64Container
@@ -187,7 +187,7 @@ jobs:
     _UseEsrpSigning: true
     _TeamName: DotNetCore
   pool:
-    name: DotNetCore-Build
+    name: DotNetCore-Build-1ES
     demands:
       - agent.os -equals Windows_NT
   steps:
@@ -238,7 +238,7 @@ jobs:
     _UseEsrpSigning: true
     _TeamName: DotNetCore
   pool:
-    name: DotNetCore-Build
+    name: DotNetCore-Build-1ES
     demands:
       - agent.os -equals Windows_NT
   steps:
@@ -297,14 +297,15 @@ jobs:
     DOTNET_CLI_TELEMETRY_OPTOUT: 1
     DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
     DOTNET_MULTILEVEL_LOOKUP: 0
+    NUGET_PACKAGES: $(Build.SourcesDirectory)/.packages
     _SignType: real
     _UseEsrpSigning: true
     _TeamName: DotNetCore
     _AzureDevopsFeedUrl: https://pkgs.dev.azure.com/dnceng/public/_packaging/MachineLearning/nuget/v3/index.json
     _SymwebSymbolServerPath: https://microsoft.artifacts.visualstudio.com/DefaultCollection
     _MsdlSymbolServerPath: https://microsoftpublicsymbols.artifacts.visualstudio.com/DefaultCollection
   pool:
-    name: DotNetCore-Build
+    name: DotNetCore-Build-1ES
     demands:
       - agent.os -equals Windows_NT
   steps: