[Asset-Sync] Git tagging hangs if tag signing enabled

[pvaneck]

For those of us with GPG signing enabled locally for all commits/tags, the process to push a new tag hangs because a signed tag requires a tag message. So git tag will automatically open the user's editor. This causes the outer process to hang indefinitely.

After killing the process, I get:

Unhandled exception. Azure.Sdk.Tools.TestProxy.Common.Exceptions.HttpException: Invocation of "git tag python/monitor/azure-monitor-query_6cab4adc27" had a non-zero exit code -1.
StdOut: Vim: Error reading input, exiting...
Vim: Finished.

StdErr: Vim: Warning: Output is not to a terminal

error: There was a problem with the editor 'vim'.
Please supply the message using either -m or -F option.

Some workarounds/solutions could be to:

• Include a default -m message with the git tag command so the editor does not open.
• Include the -c tag.gpgsign=false parameter with the git tag command. To get around this issue, I had to git config --global tag.gpgsign false

[scbedd]

Broke livetests with original PR that resolved this. Reverting and trying again.

[scbedd]

Resolved in #5139