Closes gh-2943

This commit makes sure to automatically scan `Converter` and
`GenericConverter` beans when a test uses `@WebMvcTest` or
`@WebFluxTest`.

Closes gh-10802

* pr/10944:
  Polish "Improve cache auto-configuration for Redis"
  Improve cache auto-configuration for Redis
  Respond to MR feedback
  Improve spring-boot-autoconfigure for Redis caches

Closes gh-10944

Expose key prefix, TTL and null value settings for spring-data-redis'
RedisCacheConfiguration in Spring .properties/yml configuration files.

Example:

spring.cache.redis.ttl=PT15M
spring.cache.redis.keyPrefix=foo
spring.cache.redis.useKeyPrefix=false
spring.cache.redis.cacheNullValues=false

See gh-10795

* pr/10972:
  Utilize StandardCharsets

Closes gh-10972

c719ab7a adding dependency management for a number of Apache Commons
projects to exclude commons-logging and resolve problems with
dependency convergence.

As Boot's dependencies have evolved, much of this dependency
management has become redundant. This commit removes it, and excludes
commons-logging in the single starter that still needs it instead.

Closes gh-7050

Without the 2nd blank line, Asciidoctor does not render the content
in the next file correctly or omits it entirely.

Closes gh-10946

Closes gh-10960

* pr/10959:
  Use Integer::compare in AutoConfigurationSorter

Closes gh-10959

Fixes gh-10560

Closes gh-10844

Closes gh-10954

Fixes gh-10391

* Remove unnecessary formatting changes
* Discontinue use of Optional for Redis property configuration
* Remove @see tags
* Change verbiage for property descriptions

Fixes gs-10795

* pr/10941:
  Add missing null check in FileSystemWatcher.stopAfter()

Closes gh-10941

Closes gh-10929

Migrate concourse pipeline to use credhub and expose a limited number
of jobs as "public".

Closes gh-10693

Update `SpringConfigurationPropertySource` so that the
`SystemEnvironmentPropertyMapper` is only used for the "actual" system
environment property source. This allows SystemEnvironmentProperySource
class to be used for other purposes (for example, Spring Cloud uses it
to as an override source providing decryption).

Only property sources named `systemEnvironment` or ending with
`-systemEnvironment` now have the `SystemEnvironmentPropertyMapper`
applied. The `TestPropertyValues` has been retrofitted to name the
source it adds appropriately.

Fixes gh-10840

Expose key prefix, TTL and null value settings for spring-data-redis'
RedisCacheConfiguration in Spring .properties/yml configuration files.

Example:

spring.cache.redis.ttl=PT15M
spring.cache.redis.keyPrefix=foo
spring.cache.redis.useKeyPrefix=false
spring.cache.redis.cacheNullValues=false

Fixes gs-10795

Refine `SystemEnvironmentPropertyMapper` to support environment
variables that would have worked in Spring Boot 1.5. Specifically,
camelCase property bindings now support an additional underscore. The
recommended way to map `fooBar` is still `PREFIX_FOOBAR`, however,
`PREFIX_FOO_BAR` will now also work.

Fixes gh-10873

Null value is used to indicate that the configured level should be
cleared.

Closes gh-10934

* pr/10544:
  Polish "Log context path at startup"
  Log context path at startup

Closes gh-10544

See gh-10544

* pr/10921:
  Polish

Closes gh-10921

See gh-10680

Further refine recursive binding rules so that Lists are supported when
the underlying source is iterable.

Close gh-10702

Refine the binder recursion rules introduced in commit f3373238 so
they only apply to Maps. Recursive List and Array binding is now no
longer allowed. Prior to this commit, binding a List that contained a
reference to itself would fail with a `StackOverflowException` if the
underlying property source was not iterable.

Fixes gh-10702