[202205][TestbedV2] Add multi-asic test jobs using TestbedV2. (sonic-…

…net#12722)

Why I did it
Add multi-asic test jobs using TestbedV2 in 202205 branch.

How I did it
1. Add a job in azure-pipelines.yml to add a multi-asic test job using TestbedV2 in 202205 branch.
2. Add a parameter num_asic in .azure-pipelines/run-test-scheduler-template.yml to appiont the specific image version.

.azure-pipelines/run-test-scheduler-template.yml

@@ -42,6 +42,10 @@ parameters:
   type: string
   default: ""
 
+- name: NUM_ASIC
+  type: number
+  default: 1
+
 steps:
   - script: |
       set -ex
@@ -57,7 +61,7 @@ steps:
       python ./.azure-pipelines/test_plan.py create -t ${{ parameters.TOPOLOGY }} -o new_test_plan_id.txt --min-worker ${{ parameters.MIN_WORKER }} --max-worker ${{ parameters.MAX_WORKER }} \
       --test-set ${{ parameters.TEST_SET }} --kvm-build-id $(KVM_BUILD_ID) \
       --deploy-mg-extra-params "${{ parameters.DEPLOY_MG_EXTRA_PARAMS }}" --mgmt-branch ${{ parameters.MGMT_BRANCH }} \
-      --vm-type ${{ parameters.VM_TYPE }} --specified-params "${{ parameters.SPECIFIED_PARAMS }}" --common-extra-params "${{ parameters.COMMON_EXTRA_PARAMS }}"
+      --vm-type ${{ parameters.VM_TYPE }} --specified-params "${{ parameters.SPECIFIED_PARAMS }}" --common-extra-params "${{ parameters.COMMON_EXTRA_PARAMS }}" --num-asic ${{ parameters.NUM_ASIC }}
       TEST_PLAN_ID=`cat new_test_plan_id.txt`
 
       echo "Created test plan $TEST_PLAN_ID"

azure-pipelines.yml

@@ -333,3 +333,20 @@ stages:
           MAX_WORKER: $(T0_DUALTOR_INSTANCE_NUM)
           COMMON_EXTRA_PARAMS: "--disable_loganalyzer "
           MGMT_BRANCH: 202205
+
+  - job: multi_asic_testbedv2
+    displayName: "kvmtest-multi-asic-t1-lag by TestbedV2"
+    pool:
+      vmImage: 'ubuntu-20.04'
+    timeoutInMinutes: 1080
+    condition: and(succeeded(), eq(variables.BUILD_IMG_RUN_TESTBEDV2_TEST, 'YES'))
+    continueOnError: false
+    steps:
+      - template: .azure-pipelines/run-test-scheduler-template.yml
+        parameters:
+          TOPOLOGY: t1-8-lag
+          TEST_SET: multi-asic-t1-lag
+          MIN_WORKER: 1
+          MAX_WORKER: 1
+          NUM_ASIC: 4
+          MGMT_BRANCH: 202205