A script to run CI tests locally.

Added ./run_locally.sh script. The script takes one argument being the testcase
that one wants to run. The testcase is run locally. This means that some testcases that
utilize hardware resources will not run. However most if not all rfsimulator testcases
should run as in CI.

To this end, the CI python scripting framework was updated, adding --local flag which changes
the script behavior as follows:
 - overrides <node> and <srv_node> XML elements to 'localhost' so all commands are executed locally
 - Avoid running image pull, image cleanup and workspace creation steps of the scripts:
   user is responsible for that

ci-scripts/args_parse.py

@@ -47,6 +47,7 @@ def ArgsParse(argvs,CiTestObj,RAN,HTML,EPC,CONTAINERS,HELP,SCA,PHYSIM,CLUSTER):
     py_param_file_present = False
     py_params={}
 
+    force_local = False
     while len(argvs) > 1:
         myArgv = argvs.pop(1)	# 0th is this file's name
 
@@ -54,6 +55,9 @@ def ArgsParse(argvs,CiTestObj,RAN,HTML,EPC,CONTAINERS,HELP,SCA,PHYSIM,CLUSTER):
         if re.match('^\-\-help$', myArgv, re.IGNORECASE):
             HELP.GenericHelp(CONST.Version)
             sys.exit(0)
+        if re.match('^\-\-local$', myArgv, re.IGNORECASE):
+            force_local = True
+
 
 	    #--apply=<filename> as parameters file, to replace inline parameters
         elif re.match('^\-\-Apply=(.+)$', myArgv, re.IGNORECASE):
@@ -271,4 +275,4 @@ def ArgsParse(argvs,CiTestObj,RAN,HTML,EPC,CONTAINERS,HELP,SCA,PHYSIM,CLUSTER):
             HELP.GenericHelp(CONST.Version)
             sys.exit('Invalid Parameter: ' + myArgv)
 
-    return py_param_file_present, py_params, mode
+    return py_param_file_present, py_params, mode, force_local