SoftLayer: Added flavor option (#56036)

* Added flavor option

Added flavor option to allow for use of SoftLayer flavor templates when creating new virtual machines.

See here for examples of ordering a vm with the flavor parameter:
https://softlayer-python.readthedocs.io/en/latest/api/managers/vs.html

To see flavor options use:
`slcli vs create-options`

* Update sl_vm.py

* Update sl_vm.py

* fixed version

lib/ansible/modules/cloud/softlayer/sl_vm.py

@@ -63,6 +63,10 @@ options:
     description:
       - Amount of memory to be assigned to new virtual instance.
     required: true
+  flavor:
+    description:
+      - Specify which SoftLayer flavor template to use instead of cpus and memory.
+    version_added: "2.10"
   disks:
     description:
       - List of disk sizes to be assigned to new virtual instance.
@@ -263,6 +267,7 @@ def create_virtual_instance(module):
         domain=module.params.get('domain'),
         cpus=module.params.get('cpus'),
         memory=module.params.get('memory'),
+        flavor=module.params.get('flavor'),
         hourly=module.params.get('hourly'),
         datacenter=module.params.get('datacenter'),
         os_code=module.params.get('os_code'),
@@ -338,6 +343,7 @@ def main():
             local_disk=dict(type='bool', default=True),
             cpus=dict(type='int', choices=CPU_SIZES),
             memory=dict(type='int', choices=MEMORY_SIZES),
+            flavor=dict(type='str'),
             disks=dict(type='list', default=[25]),
             os_code=dict(type='str'),
             image_id=dict(type='str'),