Add HV parameter checks
Add HV parameter checks

The first version of zeroing requires two things: that the
self-initiated shutdown of the instance can be detected, and that the
instance boots from the first disk supplied to it. This patch checks
for these by examining the hypervisor parameters.

Signed-off-by: Hrvoje Ribicic <be5828fca31f89218048bec4189e30a581aa65da@google.com>
Reviewed-by: Jose A. Lopes <0fb9c4f8511df4ec2ae28af879e9d462f6218a2c@google.com>

grnet/snf-ganeti,andir/ganeti,bitemyapp/ganeti,leshchevds/ganeti,apyrgio/ganeti,mbakke/ganeti,onponomarev/ganeti,mbakke/ganeti,ganeti-github-testing/ganeti-test-1,grnet/snf-ganeti,ganeti/ganeti,leshchevds/ganeti,andir/ganeti,onponomarev/ganeti,dimara/ganeti,ganeti-github-testing/ganeti-test-1,yiannist/ganeti,bitemyapp/ganeti,andir/ganeti,leshchevds/ganeti,mbakke/ganeti,ganeti/ganeti,ganeti/ganeti,apyrgio/ganeti,dimara/ganeti,yiannist/ganeti,yiannist/ganeti