As far as I could tell, the global_filter config added in change
I5d5c48e188cbb9b4208096736807f082bce524e8 wasn't actually making it
into the lvm.conf. Given the volume (or rather LVM volume) related
issues we've been seeing in the gate recently, we can give this a try
to see if the global_filter setting has any positive effect.
This also adds the contents of /etc/lvm/* to the logs collected by the
jobs, so that we can see the LVM config.
Change-Id: I2b39acd352669231d16b5cb2e151f290648355c0
ef53db76d0