[Fuel CI] jobs fails on git pull from fuel-qa repo

[Nikita Karpin]

Recently Fuel ci master jobs started to fail on git pull from fuel-qa repository with next error:

++ git -C /home/jenkins/workspace/master.fuel-library.pkgs.ubuntu.uca_neutron_ha/fuel-qa rev-parse HEAD
+ CURRENT_QA_COMMIT=c1c5db645f087da8e71db260a399304e4f5d371a
+ [[ c1c5db645f087da8e71db260a399304e4f5d371a != \4\f\e\e\a\7\9\5\c\6\d\e\f\4\e\9\2\5\a\e\6\a\5\3\0\a\0\2\f\2\0\a\2\9\9\2\f\7\7\a ]]
+ git -C /home/jenkins/workspace/master.fuel-library.pkgs.ubuntu.uca_neutron_ha/fuel-qa pull --ff-only origin master
From https://git.openstack.org/openstack/fuel-qa
 * branch master -> FETCH_HEAD
fatal: Not possible to fast-forward, aborting.

Looks like workspace on slave was not properly cleaned. Examples of failures:

https://ci.fuel-infra.org/job/master.fuel-library.pkgs.ubuntu.uca_neutron_ha/78/
https://ci.fuel-infra.org/job/master.fuel-library.pkgs.ubuntu.uca_neutron_ha/77
https://ci.fuel-infra.org/job/master.fuel-library.pkgs.ubuntu.uca_neutron_ha/76/

[Dmitry Kaigarodеsev (dkaiharodsev)]

workspace has been cleaned up for all related to master.fuel-library.pkgs.ubuntu.uca_neutron_ha job