Fixed bug to set hostTypeIndex correctly at the time of netapp_e_host create. (#39148)

Issue link: https://github.com/ansible/ansible/issues/39143

Correct post_body made by replacing host_type with hostType while creating
host.

lib/ansible/modules/storage/netapp/netapp_e_host.py

@@ -288,7 +288,7 @@ class Host(object):
     def create_host(self):
         post_body = dict(
             name=self.name,
-            host_type=dict(index=self.host_type_index),
+            hostType=dict(index=self.host_type_index),
             groupId=self.group_id,
             ports=self.ports
         )