Use KB as the unit for LVM PE size
Use KB as the unit for LVM PE size

LogicalVolume.Attach in bdev.py is calling "lvs" and specifying a unit of
Megabytes that is then converted to an integer resulting in the value 0 for
small sizes.

This patch makes Ganeti use KB for the unit instead of MB.

Fixes Issue 347.

Signed-off-by: Aaron Knister <76e70b6c21af3fedb6ba4f523ff9c67610738ae4@gmail.com>
Reviewed-by: Michele Tartara <05f7077a2c6cbbdc4af4ba42e3ef89a0df846179@google.com>

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