kiji-mapreduce: [maven-release-plugin] prepare for next development iteration

commit: https://github.com/kijiproject/kiji-mapreduce/commit/c2875059c32df6696c9a3b164606ae5f3c05231c
kiji-mapreduce: [maven-release-plugin] prepare release kiji-mapreduce-root-1.2.5

commit: https://github.com/kijiproject/kiji-mapreduce/commit/2b0f22bb6de8261b1743b35d42e89fd9b4bdc781