948c8b942d
In update_upper_constraints the sed substitution matches on a ' ' char after the UPPER_CONSTRAINTS_FILE consumes. This creates bad changes such as [1]. Compare the manual correction at [2]. [1] https://review.openstack.org/#/c/364973/1/tox.ini@17 [2] https://review.openstack.org/#/c/364973/1..2/tox.ini,unified Change-Id: I532150534813d23fbe9495c748ddef5e83be4739