Improve regexp for [test-]requirements.txt sed
Improve regexp for [test-]requirements.txt sed

We are seeing some cases where the version-conditional requirement
line is using a slightly different syntax. for example
https://github.com/openstack/gnocchi/commit/d01a52233c662764683c0a2f1c2bcfcbe2731114

Changing the regexp to catch those as well.

Change-Id: I26e7156ff90742a7d6c86eaa17336754ea860e26

openstack-packages/delorean,openstack-packages/DLRN,openstack-packages/delorean,openstack-packages/DLRN