add flavor description to flavor_create

To properly describe a flavor via openstacksdk we add the parameter to
flavor create. If the value is not set we default to None.

Change-Id: I9607230edfbd70fd085e694c4ee3fe08088051db

openstack/cloud/_compute.py

@@ -1388,6 +1388,7 @@ class ComputeCloudMixin(_normalize.Normalizer):
         ram,
         vcpus,
         disk,
+        description=None,
         flavorid="auto",
         ephemeral=0,
         swap=0,
@@ -1400,6 +1401,7 @@ class ComputeCloudMixin(_normalize.Normalizer):
         :param ram: Memory in MB for the flavor
         :param vcpus: Number of VCPUs for the flavor
         :param disk: Size of local disk in GB
+        :param description: Description of the flavor
         :param flavorid: ID for the flavor (optional)
         :param ephemeral: Ephemeral space size in GB
         :param swap: Swap space in MB
@@ -1418,6 +1420,7 @@ class ComputeCloudMixin(_normalize.Normalizer):
             'rxtx_factor': rxtx_factor,
             'swap': swap,
             'vcpus': vcpus,
+            'description': description,
         }
         if flavorid == 'auto':
             attrs['id'] = None

openstack/tests/unit/cloud/test_flavors.py

@@ -34,6 +34,7 @@ class TestFlavors(base.TestCase):
                      json={
                          'flavor': {
                              "name": "vanilla",
+                             "description": None,
                              "ram": 65536,
                              "vcpus": 24,
                              "swap": 0,