Update `spring-boot-dependencies` so that `json-simple` does not include
an `<option>true</optional>` element.

Fixes gh-6450

Update PropertiesConfigurationFactory so that collections can grow
beyond 256 items. Prior to this commit configuration property binding
used the default `DataBinder.autoGrowNestedPaths` setting of 256.

Fixes gh-6436

* pr/6446:
  Upgrade jsf-spring-boot-starter references

Closes gh-6446

* gh-6437:
  Align message with regex for AbstractMvcEndpoint.path

Closes gh-6437

Closes gh-6434

The MBean requires that a file does not exist at the location to which
it’s dumping the heap. This commit updates the test to ensure that the
temporary file that’s created to get a location for the heap dump file
is deleted before asking the MBean to dump the heap to that location.

Prior to this commit parsing addresses had an inconsistent effect on the
various properties that can be contained in an address (host, port,
username, password, and virtual host).

Three different approaches were used:

1. Return the property if no addresses were set. If there was one
   address set, return the property from the address. Otherwise return
   null. (host)
2. Return the property if no address were set, otherwise return the
   property from the first address (port)
3. Return the property if no addresses were set, otherwise return the
   property from the last address that had such property (username,
   password, virtual host).

This commit aims to make the behaviour consistent. If no addresses
were set the property is returned. Otherwise the value extracted from
the first address is returned. If the first address has no such value
the property is returned.

Closes gh-6424

Closes gh-6414

As a result of ccaa19d5, the documentation is now built in the
prepare-package phase.

* pr/6432:
  Use the managed version for H2 in spring-boot-sample-actuator

Closes gh-6432

Closes gh-6419

4.1.2 is not going to be out in time for inclusion in 1.4.0

See gh-6390

Update logback `base.xml` so that both `LOG_PATH` and `LOG_TEMP` can
be specified without a trailing slash.

Fixes gh-6423

See gh-5849

Update the `/env` sample used in the actuator docs to use only a limited
set of keys.

Fixes gh-5849

This reverts commit 037e6974.

See gh-6406

Closes gh-5461

Closes gh-5046

Closes gh-6418

Closes gh-6412

Closes gh-6417

Fix Gradle test broken when `tomcat-juli` was removed.

See gh-6192

Upgrade the managed Tomcat dependency to 8.5.4 and remove `tomcat-juli`
since it's now included in `tomcat-embed-core`.

Fixes gh-6192

* tomcat-engine-valves:
  Register valves at the engine level
  Add support for engine valves

Update `ServerProperties` to register `AccessLogValve` and
`RemoteIpValve` at the engine level.

Closes gh-6311

Update TomcatEmbeddedServletContainerFactory to allow registration of
engine valves as well as context values. For clarity the ambiguous
`getValues()` method has been deprecated in favor of
`getContextValves()`

See gh-6311