Specify file encoding when reading

Not specifying an encoding can cause problems in downstream Python 3 builds.

Could someone please add lhcb-gaudi-head-py3 to this? For testing in conjunction with lhcb/LHCb!2214 (merged).

• [2019-11-14 17:44] Validation started with lhcb-gaudi-merge#854
• [2019-11-15 00:05] Validation started with lhcb-gaudi-head-py3#234

assigned to @clemenci

changed milestone to %v33r0

added lhcb-gaudi-head-py3 label

approved this merge request

merged

mentioned in commit b258ac81