improve git-lb-push error messages
let git lb-push print a useful error message if a wrong remote name was specified (e.g. typo). This should distinguish invalid/inapplicable path specifications from invalid remotes. This is LBCORE-1396
GitLab service scheduled maintenance on Friday, March 21st 2025 as of 08h00 Geneva time for an estimated period of 1 hour. Further information under OTG0154918.
let git lb-push print a useful error message if a wrong remote name was specified (e.g. typo). This should distinguish invalid/inapplicable path specifications from invalid remotes. This is LBCORE-1396