Run CRUX tests standalone (#3580)

* Run CRUX tests standalone and use a new test page.

.github/workflows/crux-test.yml

@@ -0,0 +1,22 @@
+name: Test CRUX
+on:
+  push:
+    branches:
+    - main
+  pull_request:
+    branches:
+    - main
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js
+      uses: actions/setup-node@v1
+      with:
+        node-version: '16.x'
+    - name: Install sitespeed.io
+      run: npm ci
+    - name: Run tests with CruX
+      run: bin/sitespeed.js -b chrome -n 1 --crux.key ${{ secrets.CRUX_KEY }} https://en.wikipedia.org/wiki/Main_Page --plugins.remove browsertime 
+    

.github/workflows/linux.yml

@@ -55,7 +55,4 @@ jobs:
     - name: Run test with Graphite
       run: bin/sitespeed.js https://www.sitespeed.io/ -n 1 --graphite.host 127.0.0.1 --xvfb
     - name: Run test without a CLI
-      run: xvfb-run node test/runWithoutCli.js
-    - name: Run tests with CruX
-      run: bin/sitespeed.js -b chrome -n 1 --crux.key ${{ secrets.CRUX_KEY }} --xvfb https://www.sitespeed.io
-    
+      run: xvfb-run node test/runWithoutCli.js