Resolve "Add Jenkins integration"

What does this MR do and why?

feat(integration.Jenkins): Add Jenkins integration for updating monitors fix(*.form): Allow URL without TLD (like http://localhost:8080/some/path)

Screenshots or screen recordings

Example of code to retreive the last status of a Jenkins job :

from api4jenkins import Jenkins

instance = Jenkins('https://jenkins.example.org', auth=('myself', 'token_value'))

job = instance.get_job('path/to/my/jenkins/job')

build = job.get_last_completed_build()

print(build.result)

Result value can be : SUCCESS, UNSTABLE, FAILURE

MR acceptance checklist

• My code follows the style guidelines of this project
• I ran pylint and other linters for modified files
• I have performed a self-review of my own code and tested it
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• My code needed automated testing. I have added them (this is optional task)
• I have added user readable comment in the CHANGELOG

Closes #116 (closed)