workflows: Install gh cli on self-hosted runner

In confidential-containers#2077 I forgot about pull_request_target not testing
workflows in PRs and that self-hosted runners wouldn't
have the gh cli installed, so this attempts to fix the workflows
and install gh cli first.

I also set `GH_TOKEN` env in the step that uses `gh` based on the
`gh help environment` doc that states:
GH_TOKEN: an authentication token for github.com API requests.
Setting this avoids being prompted to authenticate.

Note: I did find a few actions to do this, but they were only used by single digit
projects, so I figured it would be safer to do it ourselves for now

Signed-off-by: stevenhorsman <steven@uk.ibm.com>

.github/workflows/e2e_libvirt.yaml

@@ -99,6 +99,10 @@ jobs:
           override: true
           profile: minimal
 
+      - name: Install gh cli
+        run: |
+          sudo apt install -y gh
+
       - name: Checkout kbs Repository and build kbs-client
         run: |
           sudo apt-get update -y
@@ -120,13 +124,19 @@ jobs:
           # For debugging
           ls ./target/release
           popd
+<<<<<<< HEAD
 
       - name: Checkout Trustee Operator Repository
         run: |
           test/utils/checkout_trustee_operator.sh
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
+=======
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+>>>>>>> 0b7e7d99 (workflows: Install gh cli on self-hosted runner)
       - name: run tests
         id: runTests
         env: