Specify fixed commit range in test_workflow, otherwise it may end up testing commits that fail
Specify fixed commit range in test_workflow, otherwise it may end up testing commits that fail

In particular, having unicode_literals in setup.py causes failures for C
locale, so take a commit range where it's not there.

waylonflinn/asv,edisongustavo/asv,qwhelan/asv,ericdill/asv,edisongustavo/asv,pv/asv,mdboom/asv,spacetelescope/asv,qwhelan/asv,waylonflinn/asv,giltis/asv,airspeed-velocity/asv,spacetelescope/asv,ericdill/asv,edisongustavo/asv,qwhelan/asv,spacetelescope/asv,pv/asv,mdboom/asv,giltis/asv,giltis/asv,pv/asv,mdboom/asv,airspeed-velocity/asv,qwhelan/asv,pv/asv,waylonflinn/asv,airspeed-velocity/asv,mdboom/asv,ericdill/asv,airspeed-velocity/asv,spacetelescope/asv,ericdill/asv