The 2.15 release of git drops support for `git branch --set-upstream`
and replaces it with `git branch --set-upstream-to` which was added in
git 1.8. Move from --set-upstream to --set-upstream-to in order to
support git 2.15 and beyond. Note that this specifically affects the
`git review -d` functionality as it is what needs to update the
upstream.
This does drop support for git 1.7 and older though as this option did
not exist then. Polling linux distros and OS X the oldest git I can find
is on CentOS 7 which has 1.8 so this should be fine.
Story: 2001266
Co-Authored-By: Harry Mallon <Harry.Mallon@codex.online>
Change-Id: I5ded1ab39bb2c76bdc38655299bac11b4584e138
d3d66a4715