* All "qemu-img info" calls are now run under resource limitations
that limit CPU time to 2 seconds and address space usage to 1 GB.
This helps avoid any DoS attacks via malicious images.
* All "qemu-img convert" calls now specify the import format so that
it does not have to be inferred by qemu-img.
SecurityImpact
Change-Id: Ib900bbc05cb9ccd90c6f56ccb4bf2006e30cdc80
Closes-Bug: #1449062