Actions: Add boot tests

.github/workflows/test_unit.yml

@@ -1,4 +1,4 @@
-name: Unit-Tests
+name: Boot-and-Unit-Tests
 
 on:
   push:
@@ -20,7 +20,7 @@ on:
 
 jobs:
   build:
-    name: Run unit tests
+    name: Run boot and unit tests
     runs-on: ubuntu-20.04
 
     steps:
@@ -37,4 +37,5 @@ jobs:
           bundle install --retry 3
       - name: Make all
         run: |
+          bundle exec ruby utils/devtool.rb test_boot
           bundle exec ruby utils/devtool.rb test_unit