feat: add lighthouse to e2e matrix

Signed-off-by: Steve Mattar <smattar@redhat.com>

.github/workflows/e2e.yml

@@ -14,6 +14,7 @@ jobs:
       matrix:
         cable_driver: ['libreswan', 'wireguard']
         globalnet: ['', 'globalnet']
+        lighthouse: ['', 'lighthouse']
     steps:
       - name: Check out the repository
         uses: actions/checkout@v2
@@ -23,6 +24,7 @@ jobs:
         with:
           cabledriver: ${{ matrix.cable_driver }}
           globalnet: ${{ matrix.globalnet }}
+          lighthouse: ${{ matrix.lighthouse }}
 
       - name: Post mortem
         if: failure()