Temporary callback URL tests

Workflow runs for Temporary callback URL tests

• Temporary fix of line break strings

  completed successfully:
  Temporary callback URL tests#7:Commitf5efe47pushedbyjwrosewell
  tmp/callback-url

  Nov 9, 202653s
  More actions for workflow run 7

• Test hosts that end in a line break and more IPv6 forms

  failed:
  Temporary callback URL tests#6:Commit67e50edpushedbyjwrosewell
  tmp/callback-url

  Nov 9, 202651s
  More actions for workflow run 6

• Refuse a port that is present but empty

  completed successfully:
  Temporary callback URL tests#5:Commit546bdbdpushedbyjwrosewell
  tmp/callback-url

  Nov 9, 202649s
  More actions for workflow run 5

• Test that a port that is present but empty is refused

  failed:
  Temporary callback URL tests#4:Commitf8ce57apushedbyjwrosewell
  tmp/callback-url

  Nov 9, 202655s
  More actions for workflow run 4

• Check the callback URL as the specification's six rules say

  completed successfully:
  Temporary callback URL tests#3:Commitb389308pushedbyjwrosewell
  tmp/callback-url

  Nov 9, 20261m 20s
  More actions for workflow run 3

• Temporary workflow quotes its Maven options

  failed:
  Temporary callback URL tests#2:Commita4790a8pushedbyjwrosewell
  tmp/callback-url

  Nov 9, 202659s
  More actions for workflow run 2

• Temporary workflow tmp-callback-url.yml

  failed:
  Temporary callback URL tests#1:Commit9c863edpushedbyjwrosewell
  tmp/callback-url

  Nov 9, 202627s
  More actions for workflow run 1