[maven-release-plugin] copy for tag github-api-1.15

[maven-release-plugin] copy for tag github-api-1.14

[maven-release-plugin] copy for tag github-api-1.13

[maven-release-plugin] copy for tag github-api-1.12

[maven-release-plugin] copy for tag github-api-1.11

[maven-release-plugin] copy for tag github-api-1.10

[maven-release-plugin] copy for tag github-api-1.9

[maven-release-plugin] copy for tag github-api-1.8

[maven-release-plugin] copy for tag github-api-1.7

set a plugin repository, too