Previously, DefaultRepositorySystemSessionAutoConfiguration would
read the local repository configuration from settings.xml, but did
not perform any property interpolation. This would leave placeholders
such as ${user.home} as-is and result in the use of the wrong
location. To address this, the code that reads settings.xml has been
updated to provide the current System properties as a property
interpolation source.

RepositoryConfigurationFactory configures the local repository as a
"remote" repository when the local repository location has been
overridden. This allows spring grab to copy dependencies from the
local repository into the grab output location (configured via the
grape.root system property) rather than having to download them again.
This logic did not consider the customization of the local repository
location via settings.xml so the dependencies would be downloaded again.
To address this, RepositoryConfigurationFactory has been updated to
attempt to use the location configured in settings.xml, before falling
back to the default location.

The logic that reads settings.xml has deliberately been duplicated. It
could have been extracted into a separate class, but this is only a
temporary measure until gh-3275 is tackled. Duplication was deemed
preferable to adding a new public class in 1.2.x that we’d then want to
remove in 1.3.

Closes gh-3274

Closes gh-3273

Closes gh-1287

* db2-health:
  Add DB2 specific health query

Closes gh-2565

* pull2792:
  Add useTestClassPath to run/start maven goals

Add `useTestClasspath` flag to add test dependencies to the classpath of
the application. Works with both the `start` and `run` goals.

Closes gh-2792

* pull3266:
  Polish
  Better sanitizer default for sensitive keys

Add the CloudFoundry vcap_services key, as well as a regular expression
to sanitize any key containing the word 'credentials'.

Fixes gh-3248
Closes gh-3266

Improve SpringApplicationAdminMXBean to expose additional information:

* Whether the application uses an embedded container
* The properties exposed by the `Environment`

This allows to know if the application is web-based and the HTTP port
on which it is running.

Closes gh-3067

Previously, the actual HTTP port on which a web application is running on
was only exposed in tests. This commit makes sure to provide that feature
regardless of the environment so that applications can know on which port
they are actually running on.

If there are several containers, each is exposed via the namespace of
their respective application context.

Closes gh-3259

See gh-2900

* metrics2:
  Remove duplicate code in new metrics code

Refactor BufferMetricReader, CounterBuffers and GaugeBuffers to reduce
duplicate code.

Closes gh-3117

* codahale:
  Change Codahale to Dropwizard in Javadoc.

* gh-3105:
  Remove deprecated SimpleMongoDbFactory call

Update MongoAutoConfiguration to create a `MongoClient` bean rather than
`Mongo` and update `MongoDataAutoConfiguration` to remove the call to
the deprecated `SimpleMongoDbFactory`.

Fixes gh-3105
Closes gh-3126

Add a new `spring.mvc.async.request-timeout` property which can be used
to configure AsyncSupportConfigurer.setDefaultTimeout(..).

Fixes gh-2900
Closes gh-3236

* pull3245:
  Upgrade joda-time to 2.8.1

Fixes gh-3238
Closes gh-3245

* ehcache:
  Polish
  Fix EhCache hit/miss ratio

The hitRatio is the ratio of two windowed rates that are calculated
independently. They are not updated or read transactionally, hence the
ratio of the two can drift slightly from what might be expected.

We now make sure that the hit or miss ratio can't be higher than 1

Closes gh-3235

* hornetq-typos:
  Fix typos

Closes gh-3247

Create an EmbeddedVelocityToolboxView which supports loading toolbox.xml
files from the application classpath as well as the ServletContext. The
VelocityAutoConfiguration class has been updated to use the new view.

This change allows the `spring.velocity.toolbox-config-location`
property to work with embedded servlet containers.

Fixes gh-2912

Update EntityScanRegistrar so that multiple @EntityScan annotations can
be used with a single application. Previously, when an application used
multiple annotations only the first one found would get applied. This
changes alters that to augment the packages that will be scanned.

Fixes gh-2757

Update appendix example to use the more common `/var/log` folder rather
than `/var/logs`.

Fixes gh-3225