Add testsuite for vmware_maintenancemode

Signed-off-by: Abhijeet Kasurde <akasurde@redhat.com>

test/integration/targets/vmware_maintenancemode/aliases

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+posix/ci/cloud/group1/vcenter
+cloud/vcenter
+destructive

test/integration/targets/vmware_maintenancemode/tasks/main.yml

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+# Test code for the vmware_guest_maintenancemode module.
+
+# Copyright: (c) 2017, Abhijeet Kasurde <akasurde@redhat.com>
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+- name: make sure pyvmomi is installed
+  pip:
+    name: pyvmomi
+    state: latest
+
+- name: store the vcenter container ip
+  set_fact:
+    vcsim: "{{ lookup('env', 'vcenter_host') }}"
+
+- debug: var=vcsim
+
+- name: Wait for Flask controller to come up online
+  wait_for:
+    host: "{{ vcsim }}"
+    port: 5000
+    state: started
+
+- name: kill vcsim
+  uri:
+    url: "{{ 'http://' + vcsim + ':5000/killall' }}"
+
+- name: start vcsim
+  uri:
+    url: "{{ 'http://' + vcsim + ':5000/spawn?datacenter=1&cluster=1&folder=0' }}"
+  register: vcsim_instance
+
+- name: Wait for vcsim server to come up online
+  wait_for:
+    host: "{{ vcsim }}"
+    port: 443
+    state: started
+
+- name: Get a list of host systems from vcsim
+  uri:
+    url: http://{{ vcsim }}:5000/govc_find?filter=H
+  register: hostsystems
+
+- name: Enter maintenance mode
+  vmware_maintenancemode:
+    hostname: "{{ vcsim }}"
+    username: "{{ vcsim_instance.json.username }}"
+    password: "{{ vcsim_instance.json.password }}"
+    state: present
+    esxi_hostname: "{{ item | basename }}"
+    validate_certs: no
+  with_items: "{{ hostsystems['json'] }}"
+  register: test_result_0001
+
+- debug: var=test_result_0001
+
+- name: assert that changes were made
+  assert:
+    that:
+      - "test_result_0001.results|map(attribute='changed')|unique|list == [true]"
+
+- name: Enter maintenance mode again
+  vmware_maintenancemode:
+    hostname: "{{ vcsim }}"
+    username: "{{ vcsim_instance.json.username }}"
+    password: "{{ vcsim_instance.json.password }}"
+    state: present
+    esxi_hostname: "{{ item | basename }}"
+    validate_certs: no
+  with_items: "{{ hostsystems['json'] }}"
+  register: test_result_0002
+
+- debug: var=test_result_0002
+
+- name: assert that no changes were made
+  assert:
+    that:
+      - "test_result_0002.results|map(attribute='changed')|unique|list == [false]"
+
+- name: Exit maintenance mode
+  vmware_maintenancemode:
+    hostname: "{{ vcsim }}"
+    username: "{{ vcsim_instance.json.username }}"
+    password: "{{ vcsim_instance.json.password }}"
+    state: absent
+    esxi_hostname: "{{ item | basename }}"
+    validate_certs: no
+  with_items: "{{ hostsystems['json'] }}"
+  register: test_result_0003
+
+- debug: var=test_result_0003
+
+- name: assert that changes were made
+  assert:
+    that:
+      - "test_result_0003.results|map(attribute='changed')|unique|list == [true]"
+
+- name: Exit maintenance mode again
+  vmware_maintenancemode:
+    hostname: "{{ vcsim }}"
+    username: "{{ vcsim_instance.json.username }}"
+    password: "{{ vcsim_instance.json.password }}"
+    state: absent
+    esxi_hostname: "{{ item | basename }}"
+    validate_certs: no
+  with_items: "{{ hostsystems['json'] }}"
+  register: test_result_0004
+
+- debug: var=test_result_0004
+
+- name: assert that no changes were made
+  assert:
+    that:
+      - "test_result_0004.results|map(attribute='changed')|unique|list == [false]"