feat: use git-sync action to sync with private mirror

[trivikr]

Testing done with the following packages:

• source: trivikr/git-sync-test
• destination: trivikr/private-git-sync-test

Config tested: https://github.com/trivikr/git-sync-test/blob/302d7d5cf429594757c9a32ead5e0816715f9b95/.github/workflows/git-sync.yml
Example GitHub Action run: https://github.com/trivikr/git-sync-test/runs/1778705960?check_suite_focus=true

Verified that secrets are not shown in the GitHub Action log

GitHub Action log

Cloning into '/root/source'...
SOURCE=git@github.com:***.git:main
DESTINATION=git@github.com:***.git:main
Warning: Permanently added 'github.com,140.82.113.3' (RSA) to the list of known hosts.
* main                302d7d5 [source/main] chore: update step name to git-sync
  remotes/source/HEAD -> source/main
  remotes/source/main 302d7d5 chore: update step name to git-sync
Warning: Permanently added the RSA host key for IP address '140.82.114.4' to the list of known hosts.
To github.com:***.git
   de881a8..302d7d5  main -> main

Note that:

• source GitHub URL is hidden SOURCE=git@github.com:***.git:main
• destination GitHub URL is hidden DESTINATION=git@github.com:***.git:main
• destination GitHub URL is hidden in git output To github.com:***.git

Checklist

• non-code related change (markdown/git settings etc)

[trivikr]

Values populated in GitHub repositories:

• Source repo aws/aws-sdk-js
  • secrets.GIT_SYNC_SOURCE_REPO
  • secrets.GIT_SYNC_DESTINATION_REPO
  • secrets.GIT_SYNC_SOURCE_SSH_PRIVATE_KEY
  • secrets.GIT_SYNC_DESTINATION_SSH_PRIVATE_KEY
  • deploy public key for secrets.GIT_SYNC_SOURCE_SSH_PRIVATE_KEY
• Destination repo **private**
  • deploy public key for secrets.GIT_SYNC_DESTINATION_SSH_PRIVATE_KEY

[aws-sdk-js-automation]

AWS CodeBuild CI Report

• CodeBuild project: sdk-v2-github
• Commit ID: 7cb422e
• Result: SUCCEEDED
• Build Logs (available for 30 days)

Powered by github-codebuild-logs, available on the AWS Serverless Application Repository

[trivikr]

Verified that git-sync run was successful.
GitHub Action run: https://github.com/aws/aws-sdk-js/runs/1779077108?check_suite_focus=true

GitHub Action output

SOURCE=git@github.com:***.git:master
DESTINATION=git@github.com:***.git:master
Cloning into '/root/source'...
Warning: Permanently added 'github.com,140.82.112.4' (RSA) to the list of known hosts.
Warning: Permanently added the RSA host key for IP address '140.82.112.3' to the list of known hosts.
From github.com:***
 * [new branch]        client-side-monitoring -> client-side-monitoring
 * [new branch]        dependabot/bundler/redcarpet-3.5.1 -> dependabot/bundler/redcarpet-3.5.1
 * [new branch]        repo-sync              -> repo-sync
  client-side-monitoring                            e27ad211 sync with master
  dependabot/bundler/redcarpet-3.5.1                4b4d1efd Bump redcarpet from 3.2.0 to 3.5.1
* master                                            5ec14656 [source/master] feat: use git-sync action to sync with private mirror (#3610)
  repo-sync                                         aeb19a7e Updates SDK documentation
  remotes/source/HEAD                               -> source/master
  remotes/source/client-side-monitoring             e27ad211 sync with master
  remotes/source/dependabot/bundler/redcarpet-3.5.1 4b4d1efd Bump redcarpet from 3.2.0 to 3.5.1
  remotes/source/master                             5ec14656 feat: use git-sync action to sync with private mirror (#3610)
  remotes/source/repo-sync                          aeb19a7e Updates SDK documentation
Warning: Permanently added the RSA host key for IP address '140.82.114.3' to the list of known hosts.
To github.com:***.git
   aeb19a7e..5ec14656  master -> master

Verified that force-push was successful on the master branch of private mirror.