Fix comment typo in bdev.py
Fix comment typo in bdev.py

Reviewed-by: iustinp



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