Closes gh-7870

Closes gh-6924

This commit removes the automatic enabling of Redis as the Spring Session
store when it is available. This case is covered by a warning in `1.4.x`
that this commit removes as well.

Closes gh-7858

Closes gh-7817

* gh-7763:
  Configure Animal Sniffer to exclude jar containing Java 9 bytecode
  Upgrade to Jersey 2.25

Closes gh-7763

See gh-7763

As of 2.1 cache expiration times are to be set in seconds. This commit
migrates to the new method, yet keeping the milliseconds unit.

Closes gh-7824

Closes gh-7856

* pr/7854:
  Polish

Expose full health details if management security is disabled or
management role is present.

Fixes gh-7604
Closes gh-7852

Update documentation to align with the new role based method.

See gh-6889

Add a Cloud Foundry specific section to "Production Ready Features".

See gh-7108

Update configuration meta-data and appendix to include
`management.cloudfoundry.*` meta-data.

See gh-7108

Closes gh-7810

* pr/7851:
  Reduce memory footprint of AsciiBytes.hashCode

Update `AsciiBytes.hashCode(int hash, String string)` so that it no
longer copies the backing array of the string.

Closes gh-7851

Update `ManagementContextConfigurationsImportSelector` to instantiate
classes so that order annotations are respected.

Fixes gh-7814

Update `TestRestTemplate` to handle `BasicAuthorizationInterceptor`s
correctly. Prior to this commit the `BasicAuthorizationInterceptor`
was added directly to the `ClientHttpRequestFactory` rather than
to the `RestTemplate`. This meant that it could not easily be removed
when `TestRestTemplate.withBasicAuth` was invoked.

The `TestRestTemplate` now sets the interceptor on `RestTemplate`
directly and relies on the logic in `InterceptingHttpAccessor` to
add it to the `ClientHttpRequestFactory`.

Fixes gh-7812

See gh-6579

Update JmxEndpoint support so that the `@ManagedResource` annotation
is no longer required. This prevents both `EndpointMBeanExporter` and
the regular `AnnotationMBeanExporter` from both registering the bean.

Fixes gh-7813
See gh-6579

Closes gh-7849

Closes gh-7405

Closes gh-7847

Closes gh-7845

Closes gh-7844

Closes gh-7843

Closes gh-7842

Closes gh-7841

Closes gh-7840

Closes gh-7839

Closes gh-7838

Closes gh-7837

Closes gh-7836

Closes gh-7835