updating changelog for v0.4.0.1 release

Signed-off-by: ywang19 <yaguang.wang@intel.com>
add #191

Signed-off-by: unknown <ywang19@YWANG19-MOBL2.ccr.corp.intel.com>
add list operator

Signed-off-by: unknown <ywang19@YWANG19-MOBL2.ccr.corp.intel.com>
add list operator

Signed-off-by: unknown <ywang19@YWANG19-MOBL2.ccr.corp.intel.com>
Merge branch '0.4.0.1' of https://github.com/intel-cloud/cosbench into 0.4.0.1
fix one NullPointerException when testing with ceph with auth caching enabled.

Signed-off-by: ywang19 <yaguang.wang@intel.com>
fix NullPointerExcepion when testing ceph with auth caching enabled

Signed-off-by: ywang19 <yaguang.wang@intel.com>
Merge branch '0.4.0.1' of https://github.com/intel-cloud/cosbench into 0.4.0.1
remove unused .project

Signed-off-by: ywang19 <yaguang.wang@intel.com>