Add CI-independent BMO e2e tests

Implement lightweight fixture-based tests to ensure CI platform flexibility.

.github/workflows/e2e-fixture-test.yml

@@ -0,0 +1,29 @@
+name: E2E Fixture Test
+
+on:
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Install Dependencies
+      run: |
+        "${GITHUB_WORKSPACE}/hack/e2e/ensure_go.sh"
+        "${GITHUB_WORKSPACE}/hack/e2e/ensure_kubectl.sh"
+        "${GITHUB_WORKSPACE}/hack/e2e/ensure_cmctl.sh"
+
+    - name: Build BMO e2e Docker Image
+      run: |
+        export IMG=quay.io/metal3-io/baremetal-operator:e2e
+        make docker
+
+    - name: Set Up Environment and Run BMO e2e Tests
+      run: |
+        export E2E_CONF_FILE=${GITHUB_WORKSPACE}/test/e2e/config/fixture.yaml
+        export USE_EXISTING_CLUSTER="false"
+        make test-e2e