Remove Vagrant testing and cleanup tests

Now that we rely on molecule and don't rely on Vagrant anymore,
we can remove all the Vagrant bits and playbooks. To clarify,
tests playbooks were renamed.

README.md

@@ -30,6 +30,8 @@ The main variables are:
 * keepalived_bind_on_non_local: This variable (defaulted to "False") determines whether the system that host keepalived will allow its apps to bind on non-local addresses. If you set it to true, this allows apps to bind (and start) even if they don't currently have the VIP for example.
 
 Please check the examples for more explanations on how these dicts must be configured.
+You can find an example playbook in this README, and other examples in `tests/`, including
+examples on the variables configuration.
 
 Other editable variables are listed in the defaults/main.yml. Please read the explanation there if you want to override them.
 An example of a notification script is also given, in the files folder.

tests/group_vars/all.yml

@@ -0,0 +1,2 @@
+---
+vrrp_nic: eth0

tests/playbook-with-combined-vars.yml

@@ -0,0 +1,27 @@
+---
+# This is a standalone playbook to install keepalived
+# on all nodes, having the first node the master, and
+# the rest of nodes as fallback. It is showing an
+# example of service, haproxy, to work with it.
+# In your own environment, you should probably
+# have your own group/host vars to define the content
+# of keepalived_haproxy_combined_example.yml.
+# Please note that keepalived_haproxy_combined_example.yml
+# relies on calculations to have a single var file.
+# You don't need that, it's just for convenience.
+# To see a simpler example (with more detailed variables)
+# check the other playbook: playbook-with-fine-grained-vars.yml
+- name: Install keepalived
+  hosts: all
+  order: sorted
+  vars:
+    # All nodes will broadcast vrrp on eth0
+    # You should probably use group/host vars instead.
+    vrrp_nic: eth0
+  tasks:
+  - name: Include a single (combined) var file for all nodes
+    include_vars: "keepalived_haproxy_combined_example.yml"
+
+  - name: "Include ansible-keepalived"
+    include_role:
+      name: "ansible-keepalived"

tests/playbook-with-fine-grained-vars.yml

@@ -0,0 +1,24 @@
+- name: Install keepalived on master node for haproxy use
+  hosts: master_node
+  # The VRRP NIC is defined in group/host vars
+  # You can define the equivalent of the include_vars there.
+  tasks:
+  - name: Include the variables for the master configuration
+    include_vars: "keepalived_haproxy_master_example.yml"
+
+  - name: "Include ansible-keepalived"
+    include_role:
+      name: "ansible-keepalived"
+
+- name: Install keepalived on the rest of the nodes for haproxy use
+  hosts: all:!master_node
+  # VRRP NIC variable is defined in inventory
+  # You should probably fine grain the variables of keepalived per
+  # host instead of include_vars, but hey, this is just an example.
+  tasks:
+  - name: Include the var file for all the other nodes
+    include_vars: "keepalived_haproxy_backup_example.yml"
+
+  - name: "Include ansible-keepalived"
+    include_role:
+      name: "ansible-keepalived"