Readd Chandan Kumar's SSH public key
Readd Chandan Kumar's SSH public key

My commit bce47853c98fdd2a84f08a03a4d2518035ae1831 [1],[2]
accidentially deleted Chandan's SSH public key from authorized_keys
and expired his account. This patch adds his key back and sets his
account to not expired.

[1] https://github.com/rdo-infra/ci-config/commit/bce47853c98fdd2a84f08a03a4d2518035ae1831
[2] https://review.rdoproject.org/r/c/rdo-infra/ci-config/+/39971

Change-Id: I84e1ce4d7fe9fe6510205e3761db9c669e565ad7

rdo-infra/ci-config,rdo-infra/ci-config,redhat-openstack/rdo-infra,rdo-infra/ci-config,rdo-infra/ci-config,redhat-openstack/rdo-infra,redhat-openstack/rdo-infra,redhat-openstack/rdo-infra