VMware: vCenter Cluster EVC Mode : new module (#56089)

* add vmware_evc_mode module

* alter result message for absent/absent

* Apply suggestions from code review

Co-Authored-By: CastawayEGR <36353334+CastawayEGR@users.noreply.github.com>

* add idempotency test

* change result dict to evc_mode_msg

* refactor to use pyvmomi class

* fix update to only process task on update

* minimize update code

* add single quotes around vars to match other code

* pass datacenter to cluster find

* add check_mode to disable test

test/integration/targets/vmware_evc_mode/aliases

@@ -0,0 +1,2 @@
+shippable/vcenter/group1
+cloud/vcenter

test/integration/targets/vmware_evc_mode/meta/main.yml

@@ -0,0 +1,2 @@
+dependencies:
+  - prepare_vmware_tests

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

@@ -0,0 +1,25 @@
+# Test code for the vmware evc mode module.
+# Copyright: (c) 2019, Michael Tipton <mike () ibeta.org>
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+
+- when: vcsim is not defined
+  block:
+  - name: Enable EVC mode on vCenter Cluster
+    vmware_evc_mode: &vmware_evc_data
+      hostname: "{{ vcenter_hostname }}"
+      username: "{{ vcenter_username }}"
+      password: "{{ vcenter_password }}"
+      validate_certs: no
+      evc_mode: intel-broadwell
+      state: present
+      check_mode: yes
+
+  - name: Enable EVC mode on vCenter Cluster
+    vmware_evc_mode:
+      <<: *vmware_evc_data
+  
+  - name: Disable EVC mode on vCenter Cluster
+    vmware_evc_mode:
+      <<: *vmware_evc_data
+      state: absent
+      check_mode: yes