RFR: 1813: URLs printed by Skara should have ".git" at the end of the repo name [v9]

[Zhao Song]

> In this patch, `.git` is added to the URLs printed by Skara.

Zhao Song has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 10 additional commits since the last revision:

 - Merge branch 'master' into SKARA-1813
 - fix a problem
 - fix a problem
 - rename remoteUrl and url
 - remove redundant method
 - fix a problem
 - use remoteUrl() in more places
 - Update forge/src/main/java/org/openjdk/skara/forge/HostedRepository.java
   
   Co-authored-by: Erik Joelsson <37597443+erikj79 at users.noreply.github.com>
 - add method HostedRepository#remoteUrl
 - SKARA-1813

-------------

Changes:
  - all: https://git.openjdk.org/skara/pull/1467/files
  - new: https://git.openjdk.org/skara/pull/1467/files/95d2c6e2..74c7a2ea

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=skara&pr=1467&range=08
 - incr: https://webrevs.openjdk.org/?repo=skara&pr=1467&range=07-08

  Stats: 922 lines in 33 files changed: 794 ins; 28 del; 100 mod
  Patch: https://git.openjdk.org/skara/pull/1467.diff
  Fetch: git fetch https://git.openjdk.org/skara pull/1467/head:pull/1467

PR: https://git.openjdk.org/skara/pull/1467