First draft for giant-s/parallel suite

Signed-off-by: Yuri Weinstein <yuri.weinstein@inktank.com>
First draft added stress-split and stress-split-erasure-code

Signed-off-by: Yuri Weinstein <yuri.weinstein@inktank.com>
Added logging

Signed-off-by: Yuri Weinstein <yuri.weinstein@inktank.com>
Added logging

Signed-off-by: Yuri Weinstein <yuri.weinstein@inktank.com>
Merge branch 'giant' of https://github.com/ceph/ceph-qa-suite into wip_9424
Incorporated Loic's comments

Signed-off-by: Yuri Weinstein <yuri.weinstein@inktank.com>
Separated tests in stress-split-erasure-code in order to run ec-rados-plugin=isa-k=2-m=1.yaml
with "arch: x86_64" option in distros, per Loic's comments

Signed-off-by: Yuri Weinstein <yuri.weinstein@inktank.com>
Merge pull request #238 from ceph/wip_9424

Wip 9424 - first draft upgrade/giant-x suite