[ci]: restructure repo clean up to make it robust (#6716)

restructure repo clean up to make it robust

Signed-off-by: Guohan Lu <lguohan@gmail.com>

.azure-pipelines/build-template.yml

@@ -61,10 +61,17 @@ jobs:
   displayName: ${{ parameters.platform }}
   timeoutInMinutes: ${{ parameters.timeout }}
   steps:
+  - template: cleanup.yml
   - checkout: self
+    clean: true
     submodules: recursive
     displayName: 'Checkout code'
-  - template: cleanup.yml
+  - script: |
+      git submodule foreach --recursive 'git clean -xfdf || true'
+      git submodule foreach --recursive 'git reset --hard || true'
+      git submodule foreach --recursive 'git remote update || true'
+      git submodule update --init --recursive
+    displayName: 'Reset submodules'
   - script: |
       set -e
       sudo modprobe overlay

.azure-pipelines/cleanup.yml

@@ -1,18 +1,15 @@
 steps:
 - script: |
-    sudo kill -9 `sudo cat /var/run/march/docker.pid` || true
-    sudo rm -f /var/run/march/docker.pid || true
-    sudo rm -rf fsroot || true
-    git clean -xfdf || true
-    git reset --hard || true
-    git submodule foreach --recursive 'git clean -xfdf || true' || true
-    git submodule foreach --recursive 'git reset --hard || true' || true
-    git submodule foreach --recursive 'git remote update || true' || true
-    git submodule update --init --recursive || true
+    if sudo [ -f /var/run/march/docker.pid ] ; then
+        pid=`sudo cat /var/run/march/docker.pid` ; sudo kill $pid
+    fi
+    sudo rm -f /var/run/march/docker.pid
+    sudo rm -rf /data/march/docker
 
     # clean native docker build
     if sudo [ -f dockerfs/var/run/docker.pid ] ; then
         pid=`sudo cat dockerfs/var/run/docker.pid` ; sudo kill $pid
     fi
-    sudo rm -rf /data/march/docker
+    sudo rm -rf dockerfs
+    sudo rm -rf fsroot
   displayName: "Clean Workspace"