New playbook folder for sample playbooks

The playbooks install-client.yml, install-cluster.yml, install-replica.yml,
install-server.yml, uninstall-client.yml, uninstall-cluster.yml,
uninstall-replica.yml and uninstall-server.yml have been moved into
the playbooks folder.

playbooks/install-replica.yml

@@ -0,0 +1,8 @@
+---
+- name: Playbook to configure IPA replicas
+  hosts: ipareplicas
+  become: true
+
+  roles:
+  - role: ipareplica
+    state: present