Add OWNERS, OWNERS_ALIASES, and ansible-lint GitHub Action

Onboard shiftstack-qa to Prow by adding OWNERS and OWNERS_ALIASES
files (team list from shiftstack-ci). Add GitHub Actions workflow
to run ansible-lint on PRs using the shiftstack-client container,
providing a status check for Tide to gate on.

Ref: OSPRH-32049
Change-Id: I2da24ec05257777d61600a1623bafe6a5670ced3
Signed-off-by: Itay Matza <imatza@redhat.com>

Author: imatza-rh

.github/workflows/ansible-lint.yml

@@ -0,0 +1,23 @@
+---
+name: Ansible Lint
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  ansible-lint:
+    runs-on: ubuntu-latest
+    container:
+      image: quay.io/shiftstack-qe/shiftstack-client
+      options: --user root
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Ansible collections
+        run: ansible-galaxy collection install -r requirements.yaml
+
+      - name: Run ansible-lint
+        run: ansible-lint --strict

OWNERS

@@ -0,0 +1,8 @@
+# See the OWNERS docs: https://git.k8s.io/community/contributors/guide/owners.md
+# This file just uses aliases defined in OWNERS_ALIASES.
+
+approvers:
+  - shiftstack-approvers
+
+reviewers:
+  - shiftstack-reviewers

OWNERS_ALIASES

@@ -0,0 +1,15 @@
+# See the OWNERS_ALIASES docs: https://git.k8s.io/community/contributors/guide/owners.md#OWNERS_ALIASES
+
+aliases:
+  shiftstack-approvers:
+    - eurijon
+    - gryf
+    - imatza-rh
+    - mandre
+    - stephenfin
+  shiftstack-reviewers:
+    - eurijon
+    - gryf
+    - imatza-rh
+    - mandre
+    - stephenfin