Remove std.mistral_http action from tests

Unit tests should not rely on internet connection. This commit
adds new 'std.sleep' action that can symulate long running action.

Change-Id: Ib7bede239942d429d1bb1ed6f5a2611f64520848
Closes-bug: 1538996

mistral/actions/std_actions.py

@@ -21,6 +21,7 @@ from email.mime import text
 import json
 import requests
 import smtplib
+import time
 
 from mistral.actions import base
 from mistral import exceptions as exc
@@ -432,3 +433,29 @@ class JavaScriptAction(base.Action):
 
     def test(self):
         return self.script
+
+
+class SleepAction(base.Action):
+    """Sleep action.
+
+    This action sleeps for given amount of seconds. It can be mostly useful
+    for testing and debugging purposes.
+    """
+    def __init__(self, seconds=1):
+        try:
+            self._seconds = int(seconds)
+            self._seconds = 0 if self._seconds < 0 else self._seconds
+        except ValueError:
+            self._seconds = 0
+
+    def run(self):
+        LOG.info('Running sleep action [seconds=%s]' % self._seconds)
+
+        time.sleep(self._seconds)
+
+        return None
+
+    def test(self):
+        time.sleep(1)
+
+        return None

mistral/tests/unit/engine/test_workflow_resume.py

@@ -171,7 +171,7 @@ workflows:
           - pause
 
       task2:
-        action: std.mistral_http url="http://google.com"
+        action: std.async_noop
         # This one won't be finished when execution is already PAUSED.
         on-complete:
           - task4

setup.cfg

@@ -60,3 +60,4 @@ mistral.actions =
     std.ssh_proxied = mistral.actions.std_actions:SSHProxiedAction
     std.email = mistral.actions.std_actions:SendEmailAction
     std.javascript = mistral.actions.std_actions:JavaScriptAction
+    std.sleep = mistral.actions.std_actions:SleepAction