ci: add clean-up step for rkl test

Author: erasernoob

.github/workflows/build_and_test_rkl.yml

@@ -24,6 +24,8 @@ jobs:
           buck2 build //project/libnetwork:libnetwork
 
           sudo mkdir -p /opt/cni/bin
+           
+          sudo rm -rf /etc/cni/net.d
           sudo mkdir -p /etc/cni/net.d
 
           sudo cp $(buck2 build //project/libbridge:libbridge --show-output | cut -d' ' -f2) /opt/cni/bin/libbridge
@@ -44,5 +46,12 @@ jobs:
           done
           exit $FAIL
           '
+      
+      - name: clean up
+        run: |
+          sudo rm -rf /etc/cni/net.d
+          sudo rm -rf /run/youki
+          
+