Pass hypervisor type to the OS scripts
Pass hypervisor type to the OS scripts

It's handy to make the os scripts know which hypervisor the instance is
going to run under. In order not to change the os API we pass this
information in the environment, where the os scripts can access it if
they're hypervisor-aware.

Reviewed-by: imsnah


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