add eta variables to star data

...nnpdf_data/new_commondata/STAR_2009_1JET_200GEV/filter.py

...ta/new_commondata/STAR_2009_2JET_200GEV/kinematics_A.yaml

...ta/new_commondata/STAR_2009_2JET_200GEV/kinematics_B.yaml

...ta/new_commondata/STAR_2009_2JET_200GEV/kinematics_C.yaml

...f_data/new_commondata/STAR_2009_2JET_200GEV/metadata.yaml

...ommondata/STAR_2009_2JET_MIDRAP_200GEV/kinematics_OS.yaml

...ommondata/STAR_2009_2JET_MIDRAP_200GEV/kinematics_SS.yaml

...new_commondata/STAR_2009_2JET_MIDRAP_200GEV/metadata.yaml

...nnpdf_data/new_commondata/STAR_2012_1JET_510GEV/filter.py

...ta/new_commondata/STAR_2012_2JET_510GEV/kinematics_A.yaml

...ta/new_commondata/STAR_2012_2JET_510GEV/kinematics_B.yaml

...ta/new_commondata/STAR_2012_2JET_510GEV/kinematics_C.yaml

...ta/new_commondata/STAR_2012_2JET_510GEV/kinematics_D.yaml

...f_data/new_commondata/STAR_2012_2JET_510GEV/metadata.yaml

...nnpdf_data/new_commondata/STAR_2013_1JET_510GEV/filter.py

...ta/new_commondata/STAR_2013_2JET_510GEV/kinematics_A.yaml

...ta/new_commondata/STAR_2013_2JET_510GEV/kinematics_B.yaml

...ta/new_commondata/STAR_2013_2JET_510GEV/kinematics_C.yaml

...ta/new_commondata/STAR_2013_2JET_510GEV/kinematics_D.yaml

...f_data/new_commondata/STAR_2013_2JET_510GEV/metadata.yaml