Fixes gh-1452

Add a `spring.jms.jndi-name` property to allow a JMS ConnectionFactory
to be obtained from a custom JNDI location.

Fixes gh-1471

Add `AnyNestedCondition` which can be used to create a logical 'or' of
other conditions contained on nested classes. For example:

	static class OnJndiOrProperty extends AnyNestedCondition {

		@ConditionalOnJndi()
		static class OnJndi {
		}

		@ConditionalOnProperty("something")
		static class OnProperty {
		}

	}

Fixes gh-1490

Change SpringApplicationContextLoader to set active profiles using the
`spring.profiles.active` environment property rather than calling
`SpringApplication.setAdditionalProfiles`. This allows @ActiveProfiles
to replace existing profiles rather than add to them which is consistent
with the Spring TestContext Framework.

Fixes gh-1469

Allow customization of the Apache HTTP Client used in TestRestTemplate
via an options enum.

Fixes gh-1497

Update LevelRemappingAppender to that any calls that aren't remapped
are still logged.

Fixes gh-1481

Prior to this commit, the repackage goal silently ignored the case of
two libraries having the same name and version but a different group.
As a result, the second library was overwriting the first one in the
repackaged jar.

This commit adds support for custom Library names and updates the
Maven and Gradle plugins so that the name includes the group ID
when there would otherwise be a duplicate.

Fixes gh-1475

Fixes gh-1470

Update ActiveMQ and HornetQ XA configurations to also expose non-xa
ConnectionFactory variants.

Fixes gh-1461

This commit clarifies the role of the 'addResources' flag and makes
it explicit that any duplicate found in the target directory are
actually removed

Fixes gh-1479

This commit is a workaround until git-commit-id-plugin 2.1.11 is
released. See also issue 124 of that project

Fixes gh-1484

Update SampleAtomikosApplicationTests and SampleBitronixApplicationTests
to not depend on any specific System.out order.

Fixes gh-1472

Add additional constructor and a protected postProcessConverters method
to make it easier to manipulate the final converter list that will
be used.

Fixes gh-1482

Update HornetQConnectionFactoryConfiguration and
HornetQXAConnectionFactoryConfiguration so that they no longer depend
on the HornetQ EmbeddedJMS class. EmbeddedJMS beans are started
(when possible) from the HornetQConnectionFactoryFactory.

Fixes gh-1480

Expose `max` and `min`, alongside the existing `active` and `usage`
metrics.

Rename CompositeDataSourcePoolMetadataProvider to
DataSourcePoolMetadataProviders.

Import DataSourcePoolMetadataProvidersConfiguration from
DataSourceAutoConfiguration so that PoolMetadataProviders are configured
even if actuator is not used.

Create `org.springframework.boot.autoconfigure.jdbc.metadata` package
and move DataSourcePoolMetadata classes.

Rename DataSourceMetadata to DataSourcePoolMetadata

Rename MetricDataSourceAutoConfiguration to
DataSourceMetricsAutoConfiguration

This commit improves DataSourceMetadata to expose the validation
query. This can be used by DataSourceHealthIndicator as the query
to use instead of "guessing" which query could be applied according
to the database type.

Fixes gh-1282

This commit complements 3dc932db and fix the package location of
DataSourceMetadata.

Fixes gh-1013

This commit adds an abstraction that provides a standard manner to
retrieve various metadata that are shared by most data sources.

DataSourceMetadata is implemented by the three data source
implementations that boot supports out-of-the-box: Tomcat, Hikari and
Commons dbcp.

This abstraction is used to provide two additional metrics per data
source defined in the application: the number of allocated
connection(s) (.active) and the current usage of the connection pool
(.usage).

All such metrics share the 'datasource.' prefix. The prefix is further
qualified for each data source:

* If the data source is the primary data source (that is either the
  only available data source or the one flagged @Primary amongst the
  existing ones), the prefix is "datasource.primary"
* If the data source bean name ends with "dataSource", the prefix is
  the name of the bean without it (i.e. batchDataSource becomes batch)
* In all other cases, the name of the bean is used

It is possible to override part or all of those defaults by
registering a bean with a customized version of
DataSourcePublicMetrics.

Additional DataSourceMetadata implementations for other data source
types can be added very easily, check
DataourceMetadataProvidersConfiguration for more details.

Fixes gh-1013

This commit avoids a script duplication: the integration test runs the
sample instead of a copy of it in the repro directory.

Also switched the sample from ActiveMQ to HornetQ as #323 revealed
some locking on CI. Hopefully that should fix it as HornetQ is non
persistent and can be embedded several times in the same VM.

Fixes gh-1456