[maven-release-plugin] copy for tag druid-0.16.0-incubating-rc3

[maven-release-plugin] prepare release druid-0.16.0-incubating-rc3

[maven-release-plugin] copy for tag druid-0.16.0-incubating-rc2

[maven-release-plugin] copy for tag druid-0.16.0-incubating-rc1

[maven-release-plugin] copy for tag druid-0.15.1-incubating-rc2

[maven-release-plugin] prepare release druid-0.15.1-incubating-rc2

[maven-release-plugin] copy for tag druid-0.15.1-incubating-rc1

[maven-release-plugin] copy for tag druid-0.15.0-incubating-rc2

[maven-release-plugin] prepare release druid-0.15.0-incubating-rc2

[maven-release-plugin] copy for tag druid-0.15.0-incubating-rc1