Allow newlines and other control characters in JSON parameter string

slapos/recipe/promise_plugin.py

@@ -35,7 +35,7 @@ import json
 import sys
 sys.path[0:0] = %(path)s
 
-extra_config_dict = json.loads("""%(config)s""")
+extra_config_dict = json.loads("""%(config)s""", strict=False)
 
 # We want to cleanup all imported modules from slapos namespace, because
 # they will conflict with slapos.core.

slapos/test/recipe/test_plugin.py

@@ -44,7 +44,7 @@ in multi line
       param3=self.options['config-param3'],
       param4=self.options['config-param4'],
     )
-    self.assertIn('extra_config_dict = json.loads("""%s""")' % json.dumps(expected_dict, indent=2, sort_keys=True), content)
+    self.assertIn('extra_config_dict = json.loads("""%s""", strict=False)' % json.dumps(expected_dict, indent=2, sort_keys=True), content)
 
   def test_no_module_set(self):
     recipe = makeRecipe(
@@ -67,7 +67,7 @@ in multi line
     with open(self.output) as f:
       content = f.read()
     self.assertIn("from slapos.promise.plugin.check_site_available import RunPromise", content)
-    self.assertIn('extra_config_dict = json.loads("""{}""")', content)
+    self.assertIn('extra_config_dict = json.loads("""{}""", strict=False)', content)
 
 
   def test_bad_parameters(self):