Updated Docker Volume API and remove go-ceph

Updated the Docker Volume plugin API helper lib and usage. Removed any usage of go-ceph libs, all Ceph functionality is provided by shelling out to rbd now. Hopefully fixed some bugs and did some clean up.

Remove tpkg cron

Just cleanup tpkg package to remove cron job. Comment cron script to force users to edit to update.

Update for Docker plugin helpers, check image filesystem

This update includes code to support the newer Docker volume plugin helpers code. It may not compile anymore with older versions of the docker plugin helpers (github.com/docker/go-plugins-helpers/volume). This is mainly to provide support for people compiling fresh ((see yp-engineering#41))

Compatibility Updates:

• Update Mount and Unmount api method signatures with MountRequest and UnmountRequest (still todo: tracking mount IDs)
• Added Capabilities method, which currently returns Scope: "global"

New Feature:

• Added an XFS filesystem check before Mount

Pull upstream fixes

This release pulls in upstream fixes from pull #7.

Add timeouts to shell commands

This release adds goroutines and timeouts to the external shell commands.

Hacky Fix for repeated Unmount calls to busy device

v1.2.2

Bail earlier in repeated calls to Unmount on a busy device. (#5)

Use default device name when rbd map returns nothing

v1.2.1

Trying a fix for rbd map when it returns nothing.

Pulling upstream support for volume create options

v1.2.0

v1.2.0 includes upstream changes from github.com/yp-engineering/rbd-d…

Setting a release tag for v1.1.0

Cron cleanup