add Alpine ARM64 queue (#36548)

* try to add Alpine ARM64 queue

* remove extra line

* correct queue names

* update queues

* use open queue for CI

* final cleanup

* feedback from review

Author: wfurt

eng/pipelines/linux.yml

@@ -86,6 +86,15 @@ jobs:
               _buildScriptPrefix: 'ROOTFS_DIR=/crossrootfs/arm '
               _buildExtraArguments: -warnAsError false
 
+            musl_arm64_Release:
+              _BuildConfig: Release
+              _architecture: arm64
+              _framework: netcoreapp
+              _helixQueues: $(alpineArm64Queues)
+              _dockerContainer: alpine_37_arm64_container
+              _buildScriptPrefix: 'ROOTFS_DIR=/crossrootfs/arm64 '
+              _buildExtraArguments: -warnAsError false /p:BuildNativeClang=--clang5.0 /p:RuntimeOS=linux-musl
+
       pool:
         name: Hosted Ubuntu 1604
 
@@ -104,12 +113,12 @@ jobs:
           - linuxDefaultQueues: Centos.7.Amd64.Open+RedHat.7.Amd64.Open+Debian.8.Amd64.Open+Ubuntu.1604.Amd64.Open+Ubuntu.1804.Amd64.Open+OpenSuse.42.Amd64.Open+\(Fedora.28.Amd64\)[email protected]/dotnet-buildtools/prereqs:fedora-28-helix-45b1fa2-20190402012449
           - linuxArm64Queues: \(Ubuntu.1604.Arm64\)[email protected]/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-b049512-20190321153539
           - alpineQueues: \(Alpine.38.Amd64\)[email protected]/dotnet-buildtools/prereqs:alpine-3.8-helix-45b1fa2-20190327215821
-      
         - ${{ if eq(parameters.isOfficialBuild, 'true') }}:
           - linuxDefaultQueues: Centos.7.Amd64+RedHat.7.Amd64+Debian.8.Amd64+Debian.9.Amd64+Ubuntu.1604.Amd64+Ubuntu.1804.Amd64+Ubuntu.1810.Amd64+OpenSuse.42.Amd64+SLES.12.Amd64+SLES.15.Amd64+\(Fedora.28.Amd64\)[email protected]/dotnet-buildtools/prereqs:fedora-28-helix-45b1fa2-20190402012449+\(Fedora.29.Amd64\)[email protected]/dotnet-buildtools/prereqs:fedora-29-helix-c6dc5e6-20190402012449
           - linuxArm64Queues: \(Ubuntu.1604.Arm64\)[email protected]/dotnet-buildtools/prereqs:ubuntu-16.04-helix-arm64v8-b049512-20190321153539
           - linuxArmQueues: \(Debian.9.Arm32\)[email protected]/dotnet-buildtools/prereqs:debian-9-helix-arm32v7-b049512-20190321153542
           - alpineQueues: \(Alpine.38.Amd64\)[email protected]/dotnet-buildtools/prereqs:alpine-3.8-helix-45b1fa2-20190327215821+\(Alpine.39.Amd64\)[email protected]/dotnet-buildtools/prereqs:alpine-3.9-helix-e4eaef4-20190228230637
+          - alpineArm64Queues: \(Alpine.38.Arm64\)[email protected]/dotnet-buildtools/prereqs:alpine-3.8-helix-arm64v8-46e69dd-20190327215724
 
     # Legs without helix testing
     # There is no point of running legs without outerloop tests, when in an outerloop build.
@@ -127,13 +136,13 @@ jobs:
                 _buildScriptPrefix: 'ROOTFS_DIR=/crossrootfs/arm '
                 _dockerContainer: ubuntu_1604_arm_cross_container
 
-            musl_arm64_Release:
-              _BuildConfig: Release
-              _architecture: arm64
-              _framework: netcoreapp
-              _dockerContainer: alpine_37_arm64_container
-              _buildScriptPrefix: 'ROOTFS_DIR=/crossrootfs/arm64 '
-              _buildExtraArguments: -warnAsError false /p:BuildNativeClang=--clang5.0 /p:RuntimeOS=linux-musl
+              musl_arm64_Release:
+                _BuildConfig: Release
+                _architecture: arm64
+                _framework: netcoreapp
+                _dockerContainer: alpine_37_arm64_container
+                _buildScriptPrefix: 'ROOTFS_DIR=/crossrootfs/arm64 '
+                _buildExtraArguments: -warnAsError false /p:BuildNativeClang=--clang5.0 /p:RuntimeOS=linux-musl
 
         pool:
           name: Hosted Ubuntu 1604