add uninstall playbooks for compute/infra scale groups

these playbooks/tasks will remove the previously created/provisioned compute/infra scale groups (and associated launch configs).

playbooks/aws/openshift-cluster/uninstall_nodes.yml

@@ -0,0 +1,18 @@
+---
+- name: delete the node scale groups
+  hosts: localhost
+  connection: local
+  gather_facts: yes
+  tasks:
+  - name: Alert user to variables needed - clusterid
+    debug:
+      msg: "openshift_aws_clusterid={{ openshift_aws_clusterid | default('default') }}"
+
+  - name: Alert user to variables needed - region
+    debug:
+      msg: "openshift_aws_region={{ openshift_aws_region | default('us-east-1') }}"
+
+  - name: delete the node groups
+    import_role:
+      name: openshift_aws
+      tasks_from: uninstall_nodes.yml

roles/openshift_aws/tasks/uninstall_launch_config.yml

@@ -0,0 +1,6 @@
+---
+- name: "Delete the node scale group launch config {{ l_delete_sg_launch_config_name }}"
+  ec2_lc:
+    state: absent
+    name: "{{ l_delete_sg_launch_config_name }}"
+    region: "{{ openshift_aws_region }}"

roles/openshift_aws/tasks/uninstall_node_group.yml

@@ -0,0 +1,29 @@
+---
+#
+# query asg's and determine to get details of what needs to be deleted.
+# if we find more than 1 for each type, then exit
+- name: query all asg's for this cluster
+  ec2_asg_facts:
+    region: "{{ openshift_aws_region }}"
+    tags: "{{ {'kubernetes.io/cluster/' ~ openshift_aws_clusterid: openshift_aws_clusterid} | combine(openshift_aws_node_group.tags) }}"
+  register: asgs
+
+- fail:
+    msg: "Found more than 1 auto scaling group that matches the query for group: {{ openshift_aws_node_group }}"
+  when:
+  - asgs.results|length > 1
+
+- debug:
+    msg: "{{ asgs }}"
+    verbosity: 1
+
+- name: save launch config and scale group names
+  set_fact:
+    l_delete_sg_launch_config_name: "{{ asgs.results[0].launch_config_name }}"
+    l_delete_sg_name: "{{ asgs.results[0].auto_scaling_group_name }}"
+
+- when: openshift_aws_create_scale_group
+  include_tasks: uninstall_scale_group.yml
+
+- when: openshift_aws_create_launch_config
+  include_tasks: uninstall_launch_config.yml

roles/openshift_aws/tasks/uninstall_nodes.yml

@@ -0,0 +1,8 @@
+---
+- name: include uninstall compute and infra node groups
+  include_tasks: uninstall_node_group.yml
+  with_items: "{{ openshift_aws_node_groups }}"
+  vars:
+    l_node_group_config: "{{ openshift_aws_node_group_config }}"
+  loop_control:
+    loop_var: openshift_aws_node_group

roles/openshift_aws/tasks/uninstall_scale_group.yml

@@ -0,0 +1,6 @@
+---
+- name: "Delete the scale group {{ l_delete_sg_name }}"
+  ec2_asg:
+    state: absent
+    name: "{{ l_delete_sg_name }}"
+    region: "{{ openshift_aws_region }}"