Extend iSCSI tests to mount multipath device and write data to it
Then unmount it and logout of the iscsi target. Finally log back
into the iscsi target, mount device and check data is present.
* Add Ceph-iscsi Erasure coding check
Add a test which created a ceph iscsi target backed by an
erasure coded pool.
* Fix EC pool type
* Test ceph iscsi target from default pool
* Add Ceph-iscsi Erasure coding check
Add a test which created a ceph iscsi target backed by an
erasure coded pool.
* Update action params inline with charm change
* Fix EC pool type