Add Dummy context and scenario type

Dummy Context Usage:

- if no context specified in the task file then automatically use
  Dummy Context

- or specify the context with type Dummy in the task file, like

    context:
      type: Dummy

Note: context without type name default use Heat Context.
      (e.g. samples/fio.yaml)

JIRA: -

Change-Id: I7f798a7260bdd6ac24902e2c835a3b121319fd8c
Signed-off-by: QiLiang <liangqi1@huawei.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/yardstick/cmd/commands/task.py b/yardstick/cmd/commands/task.py
index a56824aac..fbbca29ad 100755
--- a/yardstick/cmd/commands/task.py
+++ b/yardstick/cmd/commands/task.py
@@ -233,8 +233,10 @@ class TaskParser(object):
         # TODO: support hybrid context type
         if "context" in cfg:
             context_cfgs = [cfg["context"]]
-        else:
+        elif "contexts" in cfg:
             context_cfgs = cfg["contexts"]
+        else:
+            context_cfgs = [{"type": "Dummy"}]
 
         for cfg_attrs in context_cfgs:
             context_type = cfg_attrs.get("type", "Heat")