Add a new `@ImportAutoConfiguration` annotation that can be used by
tests that wish to selectively import certain auto-configuration
classes. Also add `@AutoConfigurationPackage` so that package
registration is decoupled from `@EnableAutoConfiguration`.

An added benefit of the change is @EnableAutoConfigurationImportSelector
can now be subclassed to provide custom annotation support if needed.

Fixes gh-3660
See gh-2772

Revert commit 1d31d23e to
remove `include` from `@EnableAutoConfiguration`. We'll
add a dedicated annotation instead to fix this.

See gh-3660

This reverts commit f7619706.

See gh-3569

This commit updates the default logging configuration for both Logback
and Log4J 2 to include class packaging information when logging
exceptions and to log the root cause first.

Closes gh-3398
Closes gh-3399

Closes gh-3569

Closes gh-3675

Closes gh-3676

Closes gh-3677

Closes gh-3678

Closes gh-3679

Closes gh-3680

Closes gh-3682

Closes gh-3683

Closes gh-3681

Closes gh-3674

Closes gh-3673

Closes gh-3672

Closes gh-3671

Closes gh-3670

Closes gh-3669

This commit updates the default output produced when using Log2J 2 to
be similar to the output produced by Logback. It introduces a new
converter for throwables that adds some whitespace around stacktraces
and a color converter that produces ANSI-colored output when enabled
via spring.output.ansi.enabled.

Closes gh-3548

Spring Framework 4.2 introduced support for before modes in
`@DirtiesContext` Make sure that `@IntegrationTest` also support
these new modes.

Closes gh-3642

Explicitly mention that `spring.data.mongodb.uri` can be used to
customize additional settings such as replica set.

Closes gh-2624

* pr/3667:
  Polish Javadoc

Closes gh-3667

* pr/3666:
  Fix typos

Closes gh-3666

Harmonize the configuration properties for Undertow to match the changes
made for gh-2491.

Move `spring.undertow.accessLog*` to `spring.undertow.accesslog.*`

Add `directory`, `prefix` and `suffix` properties to further customize
how access logs are configured on Tomcat. Relocate all properties to the
`server.tomcat.accesslog` namespace.

`server.tomcat.accessLogPattern` and `server.tomcat.accessLogEnabled` are
deprecated and replaced by `server.tomcat.accesslog.pattern` and
`server.tomcat.accesslog.enabled` respectively.

Closes gh-2491

Previously, only folders on the classpath would be watched and used
to trigger a restart/reload of the application. This commit adds a
new property spring.devtools.restart.additional-paths that can be
used to configure additional paths that should be watched for
changes. When a change occurs in one of those paths a restart or
reload will be triggered, depending on the full restart exclude
patterns configured via the existing spring.devtools.restart.exclude
property.

Closes gh-3469

Three conditions must be met for the console to be enabled:

 - H2 is on the classpath
 - The application is a web application
 - spring.h2.console.enabled is set to true

If spring-boot-devtools is on the classpath, spring.h2.console.enabled
will be set to true automatically. Without the dev tools, the enabled
property will have to be set to true in application.properties.

By default, the console is available at /h2-console. This can be
configured via the spring.h2.console.path property. The value of this
property must begin with a '/'.

When Spring Security is on the classpath the console will be secured
based on the user's security.* configuration. When the console is
secured, CSRF protection is disabled and frame options is set to
SAMEORIGIN for its path. Both settings are required in order for the
console to function.

Closes gh-766

Closes gh-3422

Closes gh-3288

ConfigurationPropertiesReportEndpoint parses the meta-data to inspect
entities that have potential cycles in them. The whole logic is based on
the lookup of `META-INF/spring-configuration-metadata.json` files on the
classpath. Unfortunately, the lookup instruction had a typo and did not
retrieve any file.

Surely that code was written with a clear intention in mind but it was
effectively dead code outside tests so it has been removed.

Closes gh-3310

See gh-2040

* pr/3555:
  Polish
  Add firebird specific health query