virtualbox scripts translates "\r" in VM basepath

Prevents interpretation of backslashes in output of functions
get_vm_base_path(), get_vms_running(), get_vms_present() in
functions/vm.sh.

Closes-bug: #1334070
Change-Id: I74986537e3afbae05b146d2c8c2e2262684d308e
Merge "virtualbox scripts translates "\r" in VM basepath"