Updated comments to support basic auth with credentials in HTTP task (n…

…utanix#306)

CALM-13856 : https://jira.nutanix.com/browse/CALM-13856
CALM-13793 : https://jira.nutanix.com/browse/CALM-13793

1. Verified support for basic auth with credentials is added through dsl
while creating http task
2. Verified addition of secret headers for basic auth with credentials
and basic auth

(cherry picked from commit 9722c747e84c4e0eea6ea76ce1e8655633916584)

calm/dsl/builtins/models/task.py

@@ -1372,6 +1372,7 @@ def http_task(
     """
     auth_obj = {"auth_type": "none"}
 
+    # Auth object for basic auth with credential.
     if cred is not None:
         cred_ref = _get_target_ref(cred)
         if getattr(cred_ref, "kind", None) != "app_credential":
@@ -1386,6 +1387,7 @@ def http_task(
             "credential_local_reference": cred_ref,
         }
 
+    # Auth object for basic auth
     elif credential is not None:
         if getattr(credential, "__kind__", None) != "app_credential":
             raise ValueError(
@@ -1394,10 +1396,6 @@ def http_task(
                 + " should be a Credential object of PASSWORD type"
             )
 
-        # TODO: Auth should be changed to basic auth with credential.
-        # This is dependent on https://jira.nutanix.com/browse/CALM-12149
-        # We could also possibly check calm server version to switch between
-        # the two auth mechanisms since basic auth will be deprecated.
         auth_obj = {
             "auth_type": "basic",
             "basic_auth": {