[Build]: Enable marvell-armhf PR check (#10259)

Why I did it
[Build]: Enable marvell-armhf PR check
Improve the azp dependencies, make the Test stage only depended on BuildVS stage. The Test stage will be triggered once the BuildVS stage finished, reduce the waiting time.

.azure-pipelines/azure-pipelines-image-template.yml

@@ -28,7 +28,7 @@ jobs:
       - template: cleanup.yml
       - ${{ parameters.preSteps }}
       - script: |
-          if [ -n "$(CACHE_MODE)" ] && echo $(PLATFORM_AZP) | grep -E -q "^(vs|broadcom|mellanox)$"; then
+          if [ -n "$(CACHE_MODE)" ] && echo $(PLATFORM_AZP) | grep -E -q "^(vs|broadcom|mellanox|marvell-armhf)$"; then
             CACHE_OPTIONS="SONIC_DPKG_CACHE_METHOD=$(CACHE_MODE) SONIC_DPKG_CACHE_SOURCE=/nfs/dpkg_cache/$(PLATFORM_AZP)"
             BUILD_OPTIONS="$(BUILD_OPTIONS) $CACHE_OPTIONS"
             echo "##vso[task.setvariable variable=BUILD_OPTIONS]$BUILD_OPTIONS"

.azure-pipelines/official-build-cache.yml

@@ -37,3 +37,8 @@ stages:
           variables:
             docker_syncd_rpc_image: yes
             platform_rpc: mlnx
+        - name: marvell-armhf
+          pool: sonicbld-armhf
+          timeoutInMinutes: 1200
+          variables:
+            PLATFORM_ARCH: armhf

azure-pipelines.yml

@@ -31,25 +31,41 @@ resources:
     name: Azure/sonic-mgmt
     endpoint: build
 
-stages:
-- stage: Build
-  pool: sonicbld
 variables:
 - template: .azure-pipelines/azure-pipelines-repd-build-variables.yml
 - name: CACHE_MODE
   value: rcache 
+
+stages:
+- stage: BuildVS
+  pool: sonicbld
   jobs:
   - template: .azure-pipelines/azure-pipelines-build.yml
     parameters:
       buildOptions: 'USERNAME=admin SONIC_BUILD_JOBS=$(nproc) ${{ variables.VERSION_CONTROL_OPTIONS }}'
       jobGroups:
       - name: vs
+
+- stage: Build
+  pool: sonicbld
+  dependsOn: []
+  jobs:
+  - template: .azure-pipelines/azure-pipelines-build.yml
+    parameters:
+      buildOptions: 'USERNAME=admin SONIC_BUILD_JOBS=$(nproc) ${{ variables.VERSION_CONTROL_OPTIONS }}'
+      jobGroups:
       - name: broadcom
         variables:
           swi_image: yes
       - name: mellanox
+      - name: marvell-armhf
+        pool: sonicbld-armhf
+        timeoutInMinutes: 1200
+        variables:
+          PLATFORM_ARCH: armhf
 
 - stage: Test
+  dependsOn: BuildVS
   variables:
   - name: inventory
     value: veos_vtb