Extend size of storage test images to 30G
Extend size of storage test images to 30G

Accrding to requirements of the latest HLK.

Signed-off-by: Bishara AbuHattoum <c84e0398e121514156347efab3c8f68e3030c016@daynix.com>
Signed-off-by: Dmitry Fleytman <a8cf97adadec4e1b734a39bc5aea71b5741cfca1@daynix.com>

daynix/VirtHCK