Fix rockylinux and make it voting

Some rockylinux deployments have the curl-minimal package installed by
default (the latest GenericCloud image still has the curl package), it
triggers an error when devstack wants to install the curl package.
Fix this issue by swaping curl-minimal with curl before installing base
packages.

Change-Id: I969e8dc22e7d11c9917a843d9245f33a04fe197d
2 files changed