ci: move commit length check from travis to gha

Using https://github.com/tim-actions/commit-message-checker-with-regex

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

.github/workflows/validate.yml

@@ -81,3 +81,20 @@ jobs:
         restore-keys: ${{ runner.os }}-go.sum-
     - name: verify deps
       run: make verify-dependencies
+
+
+  commit:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: get pr commits
+        id: 'get-pr-commits'
+        uses: tim-actions/get-pr-commits@v1.0.0
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: check subject line length
+        uses: tim-actions/commit-message-checker-with-regex@v0.3.1
+        with:
+          commits: ${{ steps.get-pr-commits.outputs.commits }}
+          pattern: '^.{0,72}(\n.*)*$'
+          error: 'Subject too long (max 72)'

.travis.yml

@@ -60,11 +60,9 @@ before_install:
   - sudo apt-get -qq update
   - sudo apt-get install -y libseccomp-dev
   - GO111MODULE=off go get -u golang.org/x/lint/golint
-  - GO111MODULE=off go get -u github.com/vbatts/git-validation
   - (cd ~ && GO111MODULE=on go get mvdan.cc/sh/v3/cmd/shfmt@v3.2.0)
   - env | grep TRAVIS_
 
 script:
-  - git-validation -run DCO,short-subject -v
   - make
   - make clean ci cross