Add parameters verification when Audit is being created

We have to check Audit Type and Audit State to make sure
these parameters are in valid status.

Also, we provide default states for the next attributes:

- 'audit_template' is required and should be either UUID or text field
- 'state' is readonly so it raises an error if submitted in POST
  and is set by default to PENDING
- 'deadline' is optional and should be a datetime
- 'type' is a required text field

Change-Id: I2a7e0deec0ee2040e86400b500bb0efd8eade564
Closes-Bug: #1532843
Closes-Bug: #1533210

watcher_tempest_plugin/tests/api/admin/base.py

@@ -16,8 +16,8 @@
 
 import functools
 
+from tempest.lib.common.utils import data_utils
 from tempest import test
-from tempest_lib.common.utils import data_utils
 
 from watcher_tempest_plugin import infra_optim_clients as clients
 
@@ -157,7 +157,7 @@ class BaseInfraOptimTest(test.BaseTestCase):
 
     @classmethod
     def create_audit(cls, audit_template_uuid, type='ONESHOT',
-                     state='PENDING', deadline=None):
+                     state=None, deadline=None):
         """Wrapper utility for creating a test audit
 
         :param audit_template_uuid: Audit Template UUID this audit will use

watcher_tempest_plugin/tests/api/admin/test_audit.py

@@ -16,7 +16,6 @@
 
 from __future__ import unicode_literals
 
-from tempest.lib import decorators
 from tempest.lib import exceptions
 from tempest import test
 
@@ -72,7 +71,6 @@ class TestCreateUpdateDeleteAudit(base.BaseInfraOptimTest):
         self.assertRaises(
             exceptions.BadRequest, self.create_audit, **audit_params)
 
-    @decorators.skip_because(bug="1532843")
     @test.attr(type='smoke')
     def test_create_audit_with_invalid_state(self):
         _, audit_template = self.create_audit_template()
@@ -85,7 +83,6 @@ class TestCreateUpdateDeleteAudit(base.BaseInfraOptimTest):
         self.assertRaises(
             exceptions.BadRequest, self.create_audit, **audit_params)
 
-    @decorators.skip_because(bug="1533210")
     @test.attr(type='smoke')
     def test_create_audit_with_no_state(self):
         _, audit_template = self.create_audit_template()