ci.yml: add centos-9 to container matrix

Create distro matrix for testing different containers
in the pipelines. Add centos-9 to the already
existing centos-8 distro to the distro matrix.

Fixes: #333
Signed-off-by: Albert Esteve <[email protected]>

.github/workflows/ci.yml

@@ -8,7 +8,10 @@ env:
 jobs:
   lint:
     runs-on: ubuntu-latest
-    container: quay.io/ovirt/vdsm-test-centos-8
+    strategy:
+      matrix:
+        distro: [centos-8, centos-9]
+    container: quay.io/ovirt/vdsm-test-${{matrix.distro}}
     steps:
     - uses: ovirt/checkout-action@main
     - name: Run linters
@@ -17,8 +20,11 @@ jobs:
     env:
       TRAVIS_CI: 1
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        distro: [centos-8, centos-9]
     container:
-      image: quay.io/ovirt/vdsm-test-centos-8
+      image: quay.io/ovirt/vdsm-test-${{matrix.distro}}
       # Required to create loop devices.
       options: --privileged
     steps:
@@ -29,8 +35,11 @@ jobs:
     env:
       TRAVIS_CI: 1
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        distro: [centos-8, centos-9]
     container:
-      image: quay.io/ovirt/vdsm-test-centos-8
+      image: quay.io/ovirt/vdsm-test-${{matrix.distro}}
       # Required to create loop devices.
       options: --privileged
     steps:
@@ -41,8 +50,11 @@ jobs:
     env:
       TRAVIS_CI: 1
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        distro: [centos-8, centos-9]
     container:
-      image: quay.io/ovirt/vdsm-test-centos-8
+      image: quay.io/ovirt/vdsm-test-${{matrix.distro}}
       # Needed for many operations, i.e. creating bridges
       options: --privileged
     steps: