Add CCM CI pipeline

For now it will run on each PR. If at some point it becomes too slow
we can switch it to running manually and before release.

Author: Lorak-mmk

.github/workflows/ccm_tests.yml

@@ -0,0 +1,29 @@
+name: CCM tests
+
+on:
+  push:
+    branches:
+    - main
+    - 'branch-*'
+  pull_request:
+    branches:
+    - '**'
+env:
+  CARGO_TERM_COLOR: always
+  RUST_BACKTRACE: full
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install scylla-ccm
+        run: pip3 install https://github.com/scylladb/scylla-ccm/archive/master.zip
+      - name: Run CCM command to create the ~/.ccm dir
+        continue-on-error: true
+        run: ccm status
+      - name: Update rust toolchain
+        run: rustup update
+      - name: Run CCM tests
+        run: make ccm-test