See gh-21716

Update the pipeline YAML to use ((milestone)) rather than ((branch))
when tagging docker images.

See gh-21716

Closes gh-21876

Use YAML anchors and aliases to reduce the amount of repetition
in our CI pipeline YAML.

Closes gh-21716

This commit updates the logic for handling binding exceptions in the
management context when it is separate from the application context.
The changes allow the exception details to be visible to
DefaultErrorAttributes without causing the servlet container to
detect an error condition.

Fixes gh-21036

Closes gh-21778

Closes gh-21775

Closes gh-21774

Closes gh-21777

Closes gh-21838

Closes gh-21836

Closes gh-21835

Closes gh-21834

Closes gh-21833

Closes gh-21832

Closes gh-21831

Closes gh-21830

Closes gh-21829

Closes gh-21828

Closes gh-21827

Closes gh-21826

Closes gh-21825

Closes gh-21824

Closes gh-21823

Closes gh-21822

Closes gh-21821

Closes gh-21820

Closes gh-21819

Closes gh-21818

Closes gh-21817

Closes gh-21816

Closes gh-21815