AutoExpand: Added an extra check before auto Expand.
AutoExpand: Added an extra check before auto Expand.

This patch adds an extra check to see if the newly added
drive is of the type "disk". Automatic expansion of the
cluster happens only if the above condition is met. If
new partitions are added auto expansation does not happen.

Change-Id: Ic65559a55f58706bf95ebe5e152ee46d8a7b2680
Signed-off-by: nnDarshan <d2c6d450ab98b078f2f1942c995e6d92dd504bc8@gmail.com>

skyrings/skyring,skyrings/skyring,skyrings/skyring,skyrings/skyring