Let parsed_parameters can get '_' correctly from instance-parameter:configuration

There will have an error if we didn't provide `_` parameters in
`instance-parameter:configuration`. This command contains some corner
cases that cannot parsed by json directly. This commit did some work
to ensure we can get the correct parsed_parameters.

software/jstestnode/runTestSuite.in

@@ -50,7 +50,10 @@ def main():
   args = parser.parse_args()
 
   import json
-  parsed_parameters = json.loads('$${instance-parameter:configuration._}')
+  no_py_prefix = '''$${instance-parameter:configuration}'''[4:] # The input_str has "!py!" prefix.
+  json_style_para = no_py_prefix.replace('\'', '\"')
+  parameters = json.loads(json_style_para)
+  parsed_parameters = json.loads(parameters.get('_', '{}'))
 
 
   if not getattr(args, 'target', None):

software/jstestnode/software.cfg

@@ -107,7 +107,7 @@ mode = 0644
 [template-runTestSuite]
 recipe = slapos.recipe.template
 url = ${:_profile_base_location_}/runTestSuite.in
-md5sum = fcf15b2a90340e0afe8f8b9921a4ffae
+md5sum = 37730bd272af03b8245ce6cc2e9801dd
 output = ${buildout:directory}/runTestSuite.in
 mode = 0644