GitHub Actions: add test for one kernel installation/reinstallation

.github/workflows/ubuntu.yml

@@ -55,10 +55,18 @@ jobs:
         sudo ../../out-of-tree --log-level=debug kernel autogen --max=1
         sudo ../../out-of-tree --log-level=debug pew --threshold=0 --qemu-timeout=10m
 
-    - name: End-to-End Testing [Generate all Ubuntu 22.04 kernels]
+    - name: End-to-End Testing [Install one kernel]
+      run: |
+        sudo ../../out-of-tree --log-level=debug kernel install --distro=Ubuntu --ver=18.04 --kernel=4.15.0-70-generic
+
+    - name: End-to-End Testing [Reinstall one kernel]
+      run: |
+        sudo ../../out-of-tree --log-level=debug kernel install --distro=Ubuntu --ver=18.04 --kernel=4.15.0-70-generic --force
+
+    - name: End-to-End Testing [Install all Ubuntu 22.04 kernels]
       run: |
         sudo ../../out-of-tree --log-level=debug kernel genall --distro=Ubuntu --ver=22.04
 
-    - name: End-to-End Testing [Generate all CentOS 7 kernels]
+    - name: End-to-End Testing [Install all CentOS 7 kernels]
       run: |
         sudo ../../out-of-tree --log-level=debug kernel genall --distro=CentOS --ver=7