Merge pull request #40 from xcp-ng/ci-fix

ci: run tests on PRs

Author: ydirson

.github/workflows/format.yaml

@@ -1,6 +1,10 @@
 name: Check coding style
 
-on: [push]
+on:
+  push:
+    branches:
+      - 'master'
+  pull_request:
 
 jobs:
   pycodestyle:

.github/workflows/main.yaml

@@ -1,6 +1,10 @@
 name: Test build env
 
-on: [push]
+on:
+  push:
+    branches:
+      - 'master'
+  pull_request:
 
 jobs:
   test: