ported iterkeys to py3 syntax (#5657)

* ported iterkeys to py3 syntax

Addresses ansible/ansible#18507

* Use ansible.module_utils.six.moves iterkeys instead of dict.keys()

* Removed 'iterkeys'

lib/ansible/modules/cloud/vmware/vsphere_guest.py

@@ -19,6 +19,7 @@
 # TODO:
 # Ability to set CPU/Memory reservations
 
+
 try:
     import json
 except ImportError:
@@ -983,7 +984,7 @@ def reconfigure_vm(vsphere_client, vm, module, esxi, resource_pool, cluster_name
         disk_num = 0
         dev_changes = []
         disks_changed = {}
-        for disk in sorted(vm_disk.iterkeys()):
+        for disk in sorted(vm_disk):
             try:
                 disksize = int(vm_disk[disk]['size_gb'])
                 # Convert the disk size to kilobytes
@@ -1339,7 +1340,7 @@ def create_vm(vsphere_client, module, esxi, resource_pool, cluster_name, guest,
     if vm_disk:
         disk_num = 0
         disk_key = 0
-        for disk in sorted(vm_disk.iterkeys()):
+        for disk in sorted(vm_disk):
             try:
                 datastore = vm_disk[disk]['datastore']
             except KeyError:
@@ -1395,7 +1396,7 @@ def create_vm(vsphere_client, module, esxi, resource_pool, cluster_name, guest,
         add_floppy(module, vsphere_client, config_target, config, devices,
                   default_devs, floppy_type, floppy_image_path)
     if vm_nic:
-        for nic in sorted(vm_nic.iterkeys()):
+        for nic in sorted(vm_nic):
             try:
                 nictype = vm_nic[nic]['type']
             except KeyError: