fw/config: ensure boot/runtime_params are initialized

Ensure that boot and runtime parameters always get initialized to an
obj_dict even when not explicitly specified. This will ensure they get
serialized and deserialized properly.

wa/framework/configuration/core.py

@@ -794,6 +794,10 @@ class JobSpec(Configuration):
         self.to_merge = defaultdict(OrderedDict)
         self._sources = []
         self.id = None
+        if self.boot_parameters is None:
+            self.boot_parameters = obj_dict()
+        if self.runtime_parameters is None:
+            self.runtime_parameters = obj_dict()
 
     def to_pod(self):
         pod = super(JobSpec, self).to_pod()