Add pipeline yml for nvidia-bluefield (sonic-net#90)

Why I did it
Setup a build pipeline to build the image on the daily basis, and PR will also trigger build pipeline.

How I did it
Add new pipeline.yml for nvidia-sonic repo.
Build pipeline only supports sonic-nvidia-bluefield.bin for now, and I will add support for sonic-nvidia-bluefield.tar.gz and sonic-nvidia-bluefield.bfb.

How to verify it
I have verified with my private repo. And when this PR is merged, I will create azure pipeline to make it work.

.azure-pipelines/azure-pipelines-build.yml

@@ -79,6 +79,13 @@ jobs:
           variables:
             PLATFORM_ARCH: arm64
 
+        - name: nvidia-bluefield
+          ${{ if not(parameters.qemuOrCrossBuild) }}:
+            pool: sonicbld-arm64
+          timeoutInMinutes: 2880
+          variables:
+            PLATFORM_ARCH: arm64
+
         - name: generic
           variables:
             dbg_image: yes

.azure-pipelines/azure-pipelines-repd-build-variables.yml

@@ -1,7 +1,2 @@
 variables:
-  ${{ if eq(variables['Build.Reason'],'PullRequest') }}:
-    VERSION_CONTROL_OPTIONS: 'SONIC_VERSION_CONTROL_COMPONENTS=$([[ "$(System.PullRequest.TargetBranch)" =~ ^20[2-9][0-9]{3}$ ]] && echo deb,py2,py3,web,git,docker)'
-  ${{ elseif ne(variables['Build.SourceBranchName'],'master') }}:
-    VERSION_CONTROL_OPTIONS: 'SONIC_VERSION_CONTROL_COMPONENTS=deb,py2,py3,web,git,docker'
-  ${{ else }}:
-    VERSION_CONTROL_OPTIONS: ''
+  VERSION_CONTROL_OPTIONS: ''

.azure-pipelines/build-template.yml

@@ -4,6 +4,7 @@ parameters:
   values:
   - broadcom
   - centec-arm64
+  - nvidia-bluefield
   - marvell-armhf
   - mellanox
   - vs
@@ -21,6 +22,7 @@ parameters:
   values:
   - brcm
   - centec-arm64
+  - nvidia-bluefield
   - marvell-armhf
   - mlnx
   - vs

azure-pipelines-bluefield.yml

@@ -0,0 +1,63 @@
+# Starter pipeline
+# Start with a minimal pipeline that you can customize to build and deploy your code.
+# Add steps that build, run tests, deploy, and more:
+# https://aka.ms/yaml
+
+schedules:
+- cron: "0 8 * * *"
+  displayName: Daily midnight build
+  branches:
+    include:
+    - bluefield
+  always: true
+
+trigger: none
+
+pr:
+  branches:
+    include:
+      - bluefield
+  paths:
+    exclude:
+      - .github
+
+name: $(TeamProject)_$(Build.DefinitionName)_$(SourceBranchName)_$(Date:yyyyMMdd)$(Rev:.r)
+
+resources:
+  repositories:
+  - repository: buildimage
+    type: github
+    name: nvidia-sonic/sonic-buildimage
+    endpoint: nvidia-sonic
+    ref: bluefield
+
+variables:
+- template: .azure-pipelines/azure-pipelines-repd-build-variables.yml@buildimage
+- template: .azure-pipelines/template-variables.yml@buildimage
+- name: CACHE_MODE
+  value: rcache
+- name: ENABLE_FIPS
+  value: y
+
+stages:
+- stage: Build
+  dependsOn: []
+  jobs:
+  - template: .azure-pipelines/azure-pipelines-build.yml
+    parameters:
+      buildOptions: 'USERNAME=admin SONIC_BUILD_JOBS=$(nproc) ${{ variables.VERSION_CONTROL_OPTIONS }}'
+      preSteps:
+      - task: InstallSSHKey@0
+        displayName: 'Install an SSH key'
+        inputs:
+          knownHostsEntry: '$(myHostsEntry)'
+          sshPublicKey: '$(myPubKey)'
+          sshKeySecureFile: 'id_rsa'
+      jobGroups:
+      - name: nvidia-bluefield
+        pool: sonicbld-arm64
+        timeoutInMinutes: 2880
+        variables:
+          PLATFORM_ARCH: arm64
+
+