Update clojure to latest

Includes leiningen 2.7.0 and switch to openjdk upstream base image.

library/clojure

@@ -1,12 +1,12 @@
 # maintainer: Paul Lam <[email protected]> (@Quantisan)
 # maintainer: Wes Morgan <[email protected]> (@cap10morgan)
 
-latest: git://github.com/Quantisan/docker-clojure@0d4a0abe13497a6081ebd080e83d1be0abab3f59
-onbuild: git://github.com/Quantisan/docker-clojure@0d4a0abe13497a6081ebd080e83d1be0abab3f59 onbuild
-alpine: git://github.com/Quantisan/docker-clojure@534102a7ee7e6f4825e86a648a52c44cc25eb39d alpine
-alpine-onbuild: git://github.com/Quantisan/docker-clojure@73e7427a6cfec285a3d901e4a9ae25b8109c3d0c alpine-onbuild
+latest: git://github.com/Quantisan/docker-clojure@8cf0e16895dfebd99cc4d93e86d66d4bc03f4ac1
+onbuild: git://github.com/Quantisan/docker-clojure@8cf0e16895dfebd99cc4d93e86d66d4bc03f4ac1 onbuild
+alpine: git://github.com/Quantisan/docker-clojure@8cf0e16895dfebd99cc4d93e86d66d4bc03f4ac1 alpine
+alpine-onbuild: git://github.com/Quantisan/docker-clojure@8cf0e16895dfebd99cc4d93e86d66d4bc03f4ac1 alpine-onbuild
 
-lein-2.6.1: git://github.com/Quantisan/docker-clojure@0d4a0abe13497a6081ebd080e83d1be0abab3f59
-lein-2.6.1-onbuild: git://github.com/Quantisan/docker-clojure@0d4a0abe13497a6081ebd080e83d1be0abab3f59 onbuild
-lein-2.6.1-alpine: git://github.com/Quantisan/docker-clojure@534102a7ee7e6f4825e86a648a52c44cc25eb39d alpine
-lein-2.6.1-alpine-onbuild: git://github.com/Quantisan/docker-clojure@73e7427a6cfec285a3d901e4a9ae25b8109c3d0c alpine-onbuild
+lein-2.7.0: git://github.com/Quantisan/docker-clojure@8cf0e16895dfebd99cc4d93e86d66d4bc03f4ac1
+lein-2.7.0-onbuild: git://github.com/Quantisan/docker-clojure@8cf0e16895dfebd99cc4d93e86d66d4bc03f4ac1 onbuild
+lein-2.7.0-alpine: git://github.com/Quantisan/docker-clojure@8cf0e16895dfebd99cc4d93e86d66d4bc03f4ac1 alpine
+lein-2.7.0-alpine-onbuild: git://github.com/Quantisan/docker-clojure@8cf0e16895dfebd99cc4d93e86d66d4bc03f4ac1 alpine-onbuild