bigfin: Added logic for creating erasure coded pool
bigfin: Added logic for creating erasure coded pool

Updated the create storage logic to support creation
of erasure coded pool.

Change-Id: I6905c8226d56dbc6e68066e942c073078bae7026
Signed-off-by: Shubhendu Tripathi <abf833e62503b33bb0dfae62bb381d87d91f8de1@redhat.com>

skyrings/bigfin,skyrings/bigfin,skyrings/bigfin