commits to modify test case config file for TDD (oaisim tests)

cmake_targets/autotests/tools/search_repl.py

 #!/usr/bin/python
 import sys
 import re
+import os
 
 #Arg 1 name of file
 #Arg 2 keyword
 #arg 3 replacement text
 #Note that these should be seperated by spaces
 if len(sys.argv) != 4:
-  print "search_repl.py: Wrong number of arguments. This program needs 3 arguments"
+  print "search_repl.py: Wrong number of arguments. This program needs 3 arguments. The number of arguments supplied : " + str(sys.argv)
   sys.exit()
-filename = sys.argv[1]
+filename = os.path.expandvars(sys.argv[1])
 keyword = sys.argv[2]
 replacement_text = sys.argv[3]
 
+
 file = open(filename, 'r')
 string = file.read()
 file.close()