[maven-release-plugin] copy for tag influxdb-java-2.15

[maven-release-plugin] copy for tag influxdb-java-2.14

[maven-release-plugin] copy for tag influxdb-java-2.13

[maven-release-plugin] copy for tag influxdb-java-2.12

[maven-release-plugin] copy for tag influxdb-java-2.11

[maven-release-plugin] copy for tag influxdb-java-2.10

[maven-release-plugin] copy for tag influxdb-java-2.9

release 2.8

release 2.7

Merge pull request influxdata#335 from bonitoo-io/release-2.6

release 2.6