BENTO-10. Add 'bento import' command.

Allow users to import state data from an existing cluster.

Signed-off-by: Kiyan Ahmadizadeh <kiyan@wibidata.com>
Add REVIEWERS file.
CLUSTER-23. Fix bug/typo in bento script.
CLUSTER-24. Document resolve_symlink.
CLUSTER-25. Environment variable to enable bento cluster logs.

reviewer: kiyan
review: https://review.kiji.org/r/70/
CLUSTER-22. More specific DNS check to allow non loopback `hostname` IP addresses.

review: https://review.kiji.org/r/69/
issue: https://jira.kiji.org/browse/CLUSTER-22
Locks dependency versions for upstream kiji projects.
BENTO-11. Add 'bento upgrade' command.
Set version to 1.0.0-SNAPSHOT.
[maven-release-plugin] prepare release bento-cluster-1.0.0
[maven-release-plugin] prepare for next development iteration
CLUSTER-27. Fix links to view task tracker logs.

Reviewed by: kiyan