TEST/MINOR: adding linter for commit messages

commit messages are now checked if they are aligned with our
CONTRIBUTING guide
(https://github.com/haproxy/haproxy/blob/master/CONTRIBUTING)

Author: oktalz

.gitlab-ci.yml

@@ -1,5 +1,8 @@
 ---
+stages:
+  - lint
 compare build:
+  stage: lint
   image:
     # I just like pinning things, this version is latest, not special in any way
     name: alpine:3.10.3
@@ -11,8 +14,8 @@ compare build:
     - cd build
     - ./build -file ../haproxy-spec.yaml > haproxy_spec_to_compare.yaml
     - diff -u haproxy_spec_to_compare.yaml haproxy_spec.yaml
-
 yamllint:
+  stage: lint
   image:
     name: cytopia/yamllint:latest
     entrypoint: [""]
@@ -23,3 +26,12 @@ yamllint:
     - /bin/sh -c "yamllint -f colored ."
     - chmod +x ./scripts/single-tag.sh
     - /bin/sh -c ./scripts/single-tag.sh
+lint-commit-msg:
+  stage: lint
+  image:
+    name: haproxytech/check-commit:latest
+    entrypoint: [""]
+  tags:
+    - go
+  script:
+    - go run /check.go

models/configuration.yaml

@@ -741,7 +741,7 @@ bind:
       x-dependency:
         ssl:
           value: true
-    #ca_file:
+    # ca_file:
     #  type: string
     #  x-dependency:
     #    ssl:
@@ -782,7 +782,7 @@ bind:
       x-dependency:
         ssl:
           value: true
-    #crt:
+    # crt:
     #  type: string
     #  x-dependency:
     #    ssl:

models/service-discovery.yaml

@@ -1,3 +1,4 @@
+---
 consul:
   title: Consul server
   description: Consul server configuration
@@ -43,7 +44,7 @@ consul:
       enum: [linear, exponential]
       default: exponential
     server_slots_growth_increment:
-      type: integer 
+      type: integer
     description:
       type: string
     name:
@@ -54,4 +55,4 @@ consul:
     enabled: true
     address: 127.0.0.1
     port: 90
-    retry_timeout: 10
+    retry_timeout: 10

paths/service-discovery.yaml

@@ -1,3 +1,4 @@
+---
 consul:
   get:
     summary: Return an array of all configured Consul servers
@@ -111,4 +112,4 @@ consul_one:
       '404':
         $ref: '#/responses/NotFound'
       'default':
-        $ref: '#/responses/DefaultError'
+        $ref: '#/responses/DefaultError'