r/keepalived: Deploy keepalived

[keepalived][0] is a free implementation of the Virtual Router
Redundancy Protocol (VRRP), which is a simple method for automatically
assigning an IP address to one of several potential hosts based on
certain criteria.  It is particularly useful in conjunction with a load
balancer like HAProxy, to provide layer 3 redundancy in addition to
layer 7.  We will use it for both the reverse proxy for the public
websites and the Kubernetes API server.

[0]: https://www.keepalived.org/

roles/keepalived/handlers/main.yml

@@ -0,0 +1,4 @@
+- name: reload keepalived
+  service:
+    name: keepalived
+    state: reloaded