cli: shared modules are not upgraded correctly

[audrium]

Running reana-dev git-upgrade-shared-modules -c r-server requirements (in setup.py) were upgraded to the following:

- "reana-db>=0.7.0a6,<0.8.0",
+ "reana-db>=0.8.0a1,<0.8.0",

while the correct output would be:
"reana-db>=0.8.0a1,<0.9.0",

[tiborsimko]

This is connected to the fact that master is now being used for both 0.7.0 work and 0.8.0 work.

We need to start maint-0.7 branches rapidly so that we can cleanly separate these works. Then we'll be able to amend setup requirements everywhere.

Note also #413 that is related and that will come very handy for these situations.

[tiborsimko]

maint-0.7 created everywhere in CLIENT and CLUSTER repositories, and there are many PRs to update master lower pins, so this will be fixed soon.

[tiborsimko]

OK, installation problem fixed... Remains to amend git-upgrade-shared-modules command to properly upgrade top boundary, which was the core of the issue 😉