[v1.0] Refactor test suite to remove K3s container dependency (#971) (release/v1.0) (#985)

* Refactor test suite to remove K3s container dependency (#971)

- Removed K3s container setup and teardown logic from CLI and E2E test suites.
- Simplified Kubernetes client initialization by eliminating the need for K3s container.
- Updated InitFromKubeconfig function to no longer require K3s container as a parameter.
- Deleted unused HelmInstaller and RESTClientGetter implementations.
- Cleaned up logging functions related to K3s and Helm operations.

* update CI

.github/workflows/test.yaml

@@ -55,12 +55,23 @@ jobs:
         
         echo "COVERAGE=true" >> $GITHUB_ENV
         echo "GOCOVERDIR=${{ github.workspace }}/covdata" >> $GITHUB_ENV
+        echo "REPO=ttl.sh/$(uuidgen)" >> $GITHUB_ENV
         echo "K3S_HOST_VERSION=v1.32.1+k3s1 >> $GITHUB_ENV"
     
-    - name: Build and package
+    - name: Install k3s
+      run: |
+        curl -sfL https://get.k3s.io | INSTALL_K3S_VERSION=${K3S_HOST_VERSION} INSTALL_K3S_EXEC="--write-kubeconfig-mode=777" sh -s -
+
+        echo "KUBECONFIG=/etc/rancher/k3s/k3s.yaml" >> $GITHUB_ENV
+
+    - name: Build and package and push dev images
+      env:
+        VERSION: 1h
       run: |
         make build
         make package
+        make push
+        make install
 
         # add k3kcli to $PATH
         echo "${{ github.workspace }}/bin" >> $GITHUB_PATH
@@ -70,7 +81,6 @@ jobs:
 
     - name: Run cli tests
       env:
-        K3K_DOCKER_INSTALL: "true"
         K3S_HOST_VERSION: "${{ env.K3S_HOST_VERSION }}"
       run: make test-cli
 
@@ -84,6 +94,14 @@ jobs:
         files: ${{ github.workspace }}/covdata/cover.out
         flags: cli
 
+    - name: Export logs
+      if: always()
+      env:
+        KUBECONFIG: /etc/rancher/k3s/k3s.yaml
+      run: |
+        journalctl -u k3s -o cat --no-pager > /tmp/k3s.log
+        kubectl logs -n k3k-system -l "app.kubernetes.io/name=k3k" --tail=-1 > /tmp/k3k.log
+
     - name: Archive k3s logs
       uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7
       if: always()