ci: option to configure key

Author: BreadGenie

.github/workflows/e2e.yml

@@ -16,7 +16,8 @@ jobs:
     runs-on: macos-latest # TODO: use ubuntu-latest once open sourced
     name: E2E Tests
     env:
-      EXTERNAL_SFU_URL: ${{ vars.EXTERNAL_SFU_URL }}
+      EXTERNAL_SFU_URL: ${{ secrets.EXTERNAL_SFU_URL }}
+      EXTERNAL_SFU_SECRET: ${{ secrets.EXTERNAL_SFU_SECRET }}
 
     steps:
       - name: Clone
@@ -148,7 +149,13 @@ jobs:
              SFU_PORT="3000"
           fi
 
-          bench --site meet.test set-config sfu_secret "e2e-test-secret-key-12345"
+          if [ -n "$EXTERNAL_SFU_SECRET" ]; then
+             SFU_SECRET="$EXTERNAL_SFU_SECRET"
+          else
+             SFU_SECRET="e2e-test-secret-key-12345"
+          fi
+
+          bench --site meet.test set-config sfu_secret "$SFU_SECRET"
           bench --site meet.test set-config sfu_server_url "$SFU_URL"
           bench --site meet.test set-config sfu_server_port "$SFU_PORT"
           bench --site meet.test set-config allow_tests true