metadata: sort json output

ensures the files don't change arbitrarily

Tools/module_config/generate_actuators_metadata.py

@@ -489,7 +489,7 @@ actuators = {
 
 with open(output_file, 'w') as outfile:
     indent = 2 if verbose else None
-    json.dump(actuators, outfile, indent=indent)
+    json.dump(actuators, outfile, indent=indent, sort_keys=True)
 
 if compress:
     save_compressed(output_file)

src/lib/component_information/generate_component_general.py

@@ -74,7 +74,7 @@ for metadata_type_tuple in args.type:
 component_general['metadataTypes'] = metadata_types
 
 with open(filename, 'w') as outfile:
-    json.dump(component_general, outfile)
+    json.dump(component_general, outfile, sort_keys=True)
 
 if compress:
     save_compressed(filename)

src/lib/parameters/px4params/jsonout.py

@@ -114,7 +114,7 @@ class JsonOutput():
 
 
         #Json string output.
-        self.output = json.dumps(all_json,indent=2)
+        self.output = json.dumps(all_json, indent=2, sort_keys=True)
 
 
     def Save(self, filename):

src/lib/parameters/px_generate_params.py

@@ -4,7 +4,6 @@ Param source code generation script.
 """
 from __future__ import print_function
 import xml.etree.ElementTree as ET
-import codecs
 import argparse
 import sys
 

src/lib/parameters/px_process_params.py

@@ -50,9 +50,7 @@ import argparse
 from px4params import srcscanner, srcparser, injectxmlparams, xmlout, markdownout, jsonout
 
 import lzma #to create .xz file
-import re
 import json
-import codecs
 
 def save_compressed(filename):
     #create lzma compressed version