Set proper permissions for storage.sh script

Open-webOS-DCO-1.0-Signed-off-by: Timo Aarnipuro <timo.aarnipuro@palm.com>

Change-Id: Ida2cfe226c77b7a6361bbbe3c5479a37216b2f2b
Reviewed-on: http://g2g.palm.com/1429
Reviewed-by: Build Verification
Tested-by: Timo Aarnipuro <timo.aarnipuro@palm.com>
Reviewed-by: Janne Hurskainen <janne.hurskainen@palm.com>
Reviewed-by: Keith Derrick <keith.derrick@palm.com>