conntrack only needed for none

.github/workflows/main.yml

@@ -93,10 +93,6 @@ jobs:
       run: |
         sudo apt-get update -qq
         sudo apt-get -qq -y install liblz4-tool
-    - name: Install conntrack
-      shell: bash
-      run: |
-        sudo apt-get -qq -y install conntrack
     - name: Install gopogh
       shell: bash
       run: |
@@ -164,10 +160,6 @@ jobs:
       run: |
         sudo apt-get update -qq
         sudo apt-get -qq -y install liblz4-tool
-    - name: Install conntrack
-      shell: bash
-      run: |
-        sudo apt-get -qq -y install conntrack
     - name: Docker Info
       shell: bash
       run: |
@@ -236,6 +228,7 @@ jobs:
       SHELL: "/bin/bash" # To prevent https://github.com/kubernetes/minikube/issues/6643
     runs-on: ubuntu-16.04
     steps:
+    # conntrack is required for kubernetes 1.18 and highter
     - name: Install conntrack
       shell: bash
       run: |
@@ -303,6 +296,7 @@ jobs:
       SHELL: "/bin/bash" # To prevent https://github.com/kubernetes/minikube/issues/6643
     runs-on: ubuntu-18.04
     steps:
+    # conntrack is required for kubernetes 1.18 and highter
     - name: Install conntrack
       shell: bash
       run: |
@@ -375,10 +369,6 @@ jobs:
         run: |
           sudo apt-get update -qq
           sudo apt-get -qq -y install liblz4-tool
-      - name: Install conntrack
-        shell: bash
-        run: |
-          sudo apt-get -qq -y install conntrack
       - name: Install podman
         shell: bash
         run: |