docker file gets excluded in backup_master_node.sh

[sauravkna]

The script openshift-ansible-contrib/reference-architecture/day2ops/scripts/backup_master_node.sh misses the /etc/sysconfig/docker file. Made the following changes in the otherfiles() method of script.

Original
cp -aR /etc/sysconfig/{iptables,docker-*} \
Output:
docker-network docker-storage docker-storage-setup iptables origin-node

Recommended (changing the regex for docker)
cp -aR /etc/sysconfig/{iptables,docker*} \
Output:
docker docker-network docker-storage docker-storage-setup iptables origin-node

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