Set version of gitdb2

[14rcole]

Fixes #1613

[johnbieren]

fixed it for me 👍

[samvarankashyap]

[test]

[samvarankashyap]

@14rcole
failed linchpin installation on centos7

Collecting gitdb2==3.0.1(from linchpin==1.10.0)
  ​ERROR: Could not find a version that satisfies the requirement gitdb2==3.0.1 (from linchpin==1.10.0) (from versions: 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6)
ERROR: No matching distribution found for gitdb2==3.0.1 (from linchpin==1.10.0)
WARNING: You are using pip version 19.2.3, however version 20.0.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

[johnbieren]

@14rcole
failed linchpin installation on centos7

Collecting gitdb2==3.0.1(from linchpin==1.10.0)
  ​ERROR: Could not find a version that satisfies the requirement gitdb2==3.0.1 (from linchpin==1.10.0) (from versions: 2.0.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6)
ERROR: No matching distribution found for gitdb2==3.0.1 (from linchpin==1.10.0)
WARNING: You are using pip version 19.2.3, however version 20.0.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

interesting. I am on rhel-8.1. I wonder if linchpin-1.10 works with libvirt on centos7

(linchpin) [user@host ~]$ pip freeze | grep gitdb2
gitdb2==3.0.1

[samvarankashyap]

@johnbieren @14rcole
Linchpin libvirt does not work on cento7 python3 environments
because of ansible template module which needs python3-libselinux is not available on centos7.7
If running on python 2.x versions linchpin should work.

[samvarankashyap]

No longer required since gitpython dependency is updated