Move actions done before a test run out of the constructor

The initial delay and cloning of projects were done, when a test client
object was instantiated. This didn't seem like the proper place to do it
and also led to a large constructor.

Now these steps are performed in the prerun- method, which is called before
the run()-method is called.

Change-Id: Ic6b3766f4ee12e3c0d4d4633c97fb0c7177b143c

container/tools/start_test.py

diff --git a/container/tools/start_test.py b/container/tools/start_test.py
index 374b7dd..843cb0a 100755
--- a/container/tools/start_test.py
+++ b/container/tools/start_test.py
@@ -33,12 +33,6 @@
         self.config = test_config
         self.log = logging.getLogger("ActionLogger")
 
-        if self.config["testrun"]["initialization"]["delay"]["enabled"]:
-            self._wait_random_seconds(
-                self.config["testrun"]["initialization"]["delay"]["min"],
-                self.config["testrun"]["initialization"]["delay"]["max"],
-            )
-
         self.url = self.config["gerrit"]["url"]
         self.user = self.config["gerrit"]["user"]
         self.pwd = self.config["gerrit"]["password"]
@@ -59,6 +53,13 @@
 
         self.cloned_projects = set()
 
+    def prerun(self):
+        if self.config["testrun"]["initialization"]["delay"]["enabled"]:
+            self._wait_random_seconds(
+                self.config["testrun"]["initialization"]["delay"]["min"],
+                self.config["testrun"]["initialization"]["delay"]["max"],
+            )
+
         if self.config["testrun"]["initialization"]["createProjects"]["enabled"]:
             self._create_initial_projects(
                 self.config["testrun"]["initialization"]["createProjects"]["number"]
@@ -225,4 +226,5 @@
     args = parser.parse_args()
 
     test = LoadTestInstance(config.Parser(args).parse())
+    test.prerun()
     test.run()