Making pre-allocation floating IP working for the workload

The current workload does not the new servers using the pre-allocated
IPs, in some situation, it will be hard to getting floating IPs.
This patch will allow a runner to pre-allocating some IPs, then assign
IPs to the server they like.

Change-Id: I992edb95d5d641983908f38340bb8ed546fc72aa

workloads/ansible/shade/lampstack/roles/cleaner/tasks/apply.yml

@@ -6,7 +6,6 @@
     validate_certs: "{{ app_env.validate_certs }}"
     state: absent
     floating_ip_address: "{{ item }}"
-    purge: True
     server: "{{ hostvars[item].inter_name }}"
   with_flattened:
     - "{{ groups['webservers'] }}"

workloads/ansible/shade/lampstack/roles/provision/tasks/apply.yml

@@ -16,6 +16,8 @@
     config_drive: "{{ app_env.config_drive | default('no') }}"
     security_groups: lampstack_sg
     floating_ip_pools: "{{ app_env.public_net_name | default(omit) }}"
+    floating_ips: "{{ app_env.ips[inventory_hostname] }}"
+    reuse_ips: False
     meta:
       hostname: "{{ inventory_hostname }}"
   register: osvm

workloads/ansible/shade/lampstack/vars/bluebox.yml

@@ -21,6 +21,16 @@ app_env: {
   stack_size: 4,
   volume_size: 4,
   block_device_name: "/dev/vdb",
+
+  # The following section shows how to pre allocate floating IPs for each
+  # server. If you wish not to do that, leave them empty.
+  ips: {
+    apache-1: [],
+    apache-2: [],
+    balancer: [],
+    database: []
+  },
+
   wp_latest: "http://10.0.10.41/lampstack/wordpress-4.6.1.tar.gz",
   wp_importer: "http://10.0.10.41/lampstack/wordpress-importer.0.6.3.zip"
 }

workloads/ansible/shade/lampstack/vars/leap.yml

@@ -22,6 +22,16 @@ app_env: {
   stack_size: 4,
   volume_size: 2,
   block_device_name: "/dev/vdb",
+
+  # The following section shows how to pre allocate floating IPs for each
+  # server. If you wish not to do that, leave them empty.
+  ips: {
+    apache-1: ["9.30.217.34"],
+    apache-2: ["9.30.217.23"],
+    balancer: ["9.30.217.28"],
+    database: ["9.30.217.35"]
+  },
+
   wp_latest: "http://10.0.10.12/lampstack/wordpress-4.6.1.tar.gz",
   wp_importer: "http://10.0.10.12/lampstack/wordpress-importer.0.6.3.zip"
 }