Add support for dw-metrics 4.x (prometheus#1228)

* Add support for dw-metrics 4.x

Signed-off-by: Kinshuk Bairagi <hi@kinsh.uk>

* Update DropwizardExportsTest.java

Signed-off-by: Kinshuk Bairagi <hi@kinsh.uk>

* cleanup

Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>

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Signed-off-by: Kinshuk Bairagi <hi@kinsh.uk>
Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>
Co-authored-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>

fix release (prometheus#1214)

* set snapshot version

Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>

* fix release

Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>

* fix release

Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>

* fix release

Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>

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Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>

create release (prometheus#1194)

Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>

Release v1.3.2

[maven-release-plugin] copy for tag v1.3.1

[maven-release-plugin] copy for tag v1.3.0

[maven-release-plugin] copy for tag v1.2.1

[maven-release-plugin] copy for tag v1.2.0

[maven-release-plugin] copy for tag v1.1.0

[maven-release-plugin] copy for tag v1.0.0