kernel-config: do not build unneeded modules, step 1

Disable mtd, multimedia, sound, graphics, staging, wireless, isdn, some
i/o busses and input drivers.  This gets us down from ~3500 modules to
~2000 w/o even looking at the target hardware.  The next step is to
take a closer look and leave on only what is essential and stop saying
yes to oldconfig questions.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Bump gitbuilder version (scrolling top status)

Signed-off-by: Dan Mick <dan.mick@inktank.com>
Use lib-nss instead of cryptop.

Signed-off-by: Sandon Van Ness <sandon@inktank.com>
fabfile: install libudev

libkrbd, a component which rbd and ceph_test_librbd_fsx tools depend
on, depends on libudev (libudev-dev .deb, libudev-devel .rpm up to
Fedora 17, systemd-devel .rpm on Fedora 18 and above, although
a transitional libudev-devel package is provided).  Install it.

Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>