[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

Merge pull request influxdata#256 from influxdata/ross-release-2.5

Update documentation for v2.5

Merge pull request influxdata#213 from influxdata/update-readme-2.4

Update readme to reference v2.4

Merge pull request influxdata#200 from influxdata/update-readme-2.3

Update README to reference v2.3

Updating README Maven version to 2.2.

Merge pull request influxdata#132 from antjori/IgnorePointNullValues

Fix for issue influxdata#117.