Description of problem:

Ref - BZ 1783975

With latest changes to ceph-ansible, user no longer needs to copy playbooks from /usr/share/ceph-ansible/infrastructure-playbooks to /usr/share/ceph-ansible to run the playbooks, so we need to remove steps which asks users to copy playbooks.

Example -

1) Chapter 5.3 - step 4 needs to be removed and example command in steps 6 should be changed from
>> ansible-playbook rolling_update.yml
to
>> ansible-playbook infrastructure-playbooks/rolling_update.yml

Please imply these changes in similar scenarios in operations guide also.