requirements.txt need some extras for rhel8.3

[Mathias Gonzalez]

these dependencies are required to install zun on redhat8.3 / openstack release ussuri with horizon installed

enmerkar>=0.7.1
pyScss>=1.3.7
Django<3.0,>=2.2

[hongbin (hongbin034)]

@Mathias,

The dependencies you listed doesn't seem to be a direct dependency of Zun. Could you provide more details. If you installed Zun without those dependencies, it cannot work? Any error you hit?

[Mathias Gonzalez (mathgonzlez)]

@hongbin if i try to install zun with horizon installed in same host i receive an error that i need the dependencies listed.