Closes gh-6940

Closes gh-6939

Closes gh-6938

Closes gh-6937

Closes gh-6936

Closes gh-6935

Closes gh-6934

Closes gh-6933

Closes gh-6932

Closes gh-6931

Closes gh-6930

Closes gh-6929

Closes gh-6561

Closes gh-6910

Closes gh-6810

Closes gh-6812

Previously, the servlet path was being applied twice. Once by the
code that sets up the DefaultCurieProvider and once by the provider
itself which uses ServletUriComponentBuilder's
fromCurrentServletMapping() to build the application URI.

This commit removes the duplicate logic when creating the
DefaultCurieProvider.

Closes gh-6585

This is an alternative to the fix made in 3b52909f which removed the
chown call entirely.

Prior to 3b52909f, the ownership of $PID_FOLDER was always changed even
when its value was /var/run. This was problematic as it could prevent
other services from creating their pid folder or file.

When a sub-folder is used, changing its ownership so that it’s owned by
the user that will run the app is desirable as it limits access to the
folder. Rather than removing the chown call entirely, this commit
ensures that it only happens when a sub-folder is being used to hold the
pid file.

Closes gh-6532

Closes gh-6923

Closes gh-6922

Fixes gh-6521

* pr/6921:
  Polish

Update `@AutoConfigureMockMvc` with a `printOnlyOnFailure` option which
allows errors to be printed only when tests fail. Defaults to `true`
meaning the logs are no longer cluttered with MVC results for passing
tests.

Fixes gh-6653

Closes gh-6914 (I hope)

See gh-6918

Update WebDriver support to ensure that the `.quit()` method is called
after each test method runs and that a new WebDriver instance is
injected each time.

Support is provided by introducing a new `Scope` which is applied by
a ContextCustomizerFactory and reset by a TestExecutionListener.

Fixes gh-6641

Fixes gh-6916

* pr/6909:
  Link to Spring Security OAuth2 reference docs

Update documentation to include a link to Spring Security OAuth2's
reference documentation.

Closes gh-6909