Currently, huawei driver will use the "AllocType" configuration
or default "thick" type to create share, if "thin-provisioning"
not specified in share_type, but scheduler default uses thin
type in this situation, so huawei driver isn't consistent with
scheduler.
This patch removes the "AllocType" configuration from huawei
driver configuration file and default use "thin" type if
"thin-provisioning" not given.
Depend on change I238a7962425ea35c356c5ed2e31b8f68462b3769.
DocImpact
Change-Id: I5b7128657e089113da44bc862e9c864de2ec59b2
Closes-Bug: #1609718