Closes gh-8497

* pr/8906:
  Polish "Fix statsd metrics collection for names with ":""
  Fix statsd metrics collection for names with ":"

Closes gh-8906

Statsd server is ignoring malformed metrics. This change introduces
a basic sanitizing to metric names for avoid losing those metrics.

See gh-8906

Rename `AbstractTemplateAvailabilityProvider` to
`PathBasedTemplateAvailabilityProvider`.

Closes gh-8913

Closes gh-8672

Closes gh-8903

Closes gh-8592

* pr/8889:
  Upgrade to Apache Maven 3.5.0

Closes gh-8889

Closes gh-8895

Closes gh-8892

Closes gh-8232

Closes gh-6911

This commit makes sure to honour the `spring.aop.proxy-target-class`
property if set by the user. Previously, the
`PersistenceExceptionTranslationPostProcessor` was always configured to
use cglib, regardless of the value of that property.

Closes gh-8887

Closes gh-8497

Fixes gh-8883

This commit makes sure to honour the `spring.aop.proxy-target-class`
property if set by the user. Previously, the
`MethodValidationPostProcessor` was always configured to use cglib,
regardless of the value of that property.

Closes gh-8869

* pr/8650:
  Polish "Add the ability to disable the trace filter"
  Add the ability to disable the trace filter

Closes gh-8650

See gh-8650

* pr/8813:
  Polish "Fix http status code with unknown log level"
  Fix http status code with unknown log level