dm-calcite master branch on 29042021. This tag is created before merg… …ing gradle related changes to dm-calcite master.

[maven-release-plugin] copy for tag calcite-1.18.0 

[maven-release-plugin] copy for tag calcite-1.17.0 

[maven-release-plugin] copy for tag calcite-1.16.0 

[maven-release-plugin] copy for tag calcite-1.15.0 

[maven-release-plugin] copy for tag calcite-1.14.0 

[maven-release-plugin] copy for tag calcite-1.13.0 

[maven-release-plugin] copy for tag calcite-1.12.0 

[maven-release-plugin] copy for tag calcite-1.11.0 

[maven-release-plugin] prepare release calcite-avatica-1.9.0-rc1