[maven-release-plugin] copy for tag clojure-1.9.0

[maven-release-plugin] copy for tag clojure-1.9.0-RC2

[maven-release-plugin] copy for tag clojure-1.9.0-RC1

[maven-release-plugin] copy for tag clojure-1.9.0-beta4

[maven-release-plugin] copy for tag clojure-1.9.0-beta3

[maven-release-plugin] copy for tag clojure-1.9.0-beta2

[maven-release-plugin] copy for tag clojure-1.9.0-beta1

[maven-release-plugin] copy for tag clojure-1.9.0-alpha20

[maven-release-plugin] copy for tag clojure-1.9.0-alpha19

[maven-release-plugin] copy for tag clojure-1.9.0-alpha18