Preparation for support scenario tests on CephFS Native

To support Cephfs Native driver a new method was created for
configuring Ceph clients to access the shares.
For Ceph native backend "ceph-fuse" package must be installed
within the instance for mount operation.
Another package called "crudini" is required within the instance
for handling ini files.

Change-Id: I24fca3de3243717928957bbfaa118e8c8aff88be
4 files changed