Add git conventional commit

[olblak]

Add Git conventional commit support to updatecli.
It can now be used from the scm configuration within target definition as defined in the following example.

• Documentation pull request

targets:
  imageTag:
    name: "jenkins/jenkins docker tag"
    kind: yaml
    spec:
      file: "charts/jenkins/values.yaml"
      key: "jenkins.controller.imageTag"
    scm:
      git:
        url: "git@github.com:olblak/charts.git"
        branch: master
        user: olblak
        email: me@olblak.com
        directory: "/home/olblak/Project/Jenkins-infra/charts"
        commitMessage:
          type: fix
          scope: deps

commitMessage:
  type:       // Specify commit type, default set to chore
  scope:    // Specify commit scope,  *Optional
  footer:     // Specify commit footer message *Optional
  title:        // Override default body message
  hideCredit: // Remove "Made with ❤️️  by updatecli" from commit message
  body:      // Override default body message

If no "commitMessage" is defined then the default behavior displays a commit message like

Author: olblak <updatecli@updatecli.io>
Date:   Tue May 4 15:41:44 2021 +0200

    chore: Update key "dependencies[0].version" from file "charts/jenkins/r...
    
    ... equirements.yaml"
    
    Made with ❤️️  by updatecli

Signed-off-by: Olivier Vernin olivier@vernin.me

[dduportal]

I got a few questions:

• What is the result if the attribute commitMessage is not set? Does it keep the same behavior as before?
• Could you add a result exemple in the PR message (until the doc PR is done)? So it would make clear what is the output