Add `-Dartifact.version` setting to maven pom.xml.
Add `-Dartifact.version` setting to maven pom.xml.

cocoatomo/asakusafw,ashigeru/asakusafw,asakusafw/asakusafw,akirakw/asakusafw,asakusafw/asakusafw,cocoatomo/asakusafw,akirakw/asakusafw,ashigeru/asakusafw