Verify individual disks in Instance
Verify individual disks in Instance

Instance policy on disks is specified on a per-disk basis. So extend
the instance description by the sizes of the individual disks and modify
the instance policy verification to correctly check individual disks.

Signed-off-by: Klaus Aehlig <4ce51de36d9068cd7db2eec1151e0f3f95419008@google.com>
Reviewed-by: Guido Trotter <f62ca4d5358bdaeef0e50e57f9f7e231de63727e@google.com>

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