python-boltons from home:luc14n0 project

For openSUSE Tumbleweed run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:luc14n0/openSUSE_Tumbleweed/home:luc14n0.repo
zypper refresh
zypper install python-boltons

For 15.6 run the following as root:

zypper addrepo https://download.opensuse.org/repositories/home:luc14n0/15.6/home:luc14n0.repo
zypper refresh
zypper install python-boltons