Pin scciclient to last commit supporting Python 2.7
Pin scciclient to last commit supporting Python 2.7

python-scciclient does not have a stable/train branch, although it
has other stable branches. Commit [1] broke compatibility with
Python 2.7, let's pin the project to the previous commit to ensure
Train compatibility.

[1] - https://review.opendev.org/c/x/python-scciclient/+/790898

Change-Id: I8e5dbdc6200b12faf3a594c0cdd509ffa4c2d59d

redhat-openstack/rdoinfo