Add AnyHttpUrl validator for jenkins's server_url config field

[Thanhphan1147]

Applicable spec:

Overview

Rationale

Juju Events Changes

Module Changes

Library Changes

Checklist

• The charm style guide was applied
• The contributing guide was applied
• The changes are compliant with ISD054 - Managing Charm Complexity
• The documentation is generated using src-docs
• The documentation for charmhub is updated.
• The PR is tagged with appropriate label (urgent, trivial, complex)

[gtrkiller]

LGTM! Some small comments

[arturo-seijas]

Can you add unit tests?

[amandahla]

Could you fill in the PR description?

[yanksyoon]

Thx for the changes!

[arturo-seijas]

LGTM

[github-actions]

Test coverage for 68a610c

Name              Stmts   Miss Branch BrPart  Cover   Missing
-------------------------------------------------------------
src/agent.py        111      0     28      0   100%
src/charm.py         54      0     10      0   100%
src/metadata.py      11      0      0      0   100%
src/pebble.py        20      0      0      0   100%
src/server.py        51      0     12      0   100%
src/state.py         79      0     16      0   100%
-------------------------------------------------------------
TOTAL               326      0     66      0   100%

Static code analysis report

Run started:2023-11-14 17:18:21.225448

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 1753
  Total lines skipped (#nosec): 1
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 0

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):

[yanksyoon]

LGTM!