[execo_g5k] api_utils: fix always retrieving the full api cache due to...

[execo_g5k] api_utils: fix always retrieving the full api cache due to mismatched git commits at different levels

src/execo_g5k/api_utils.py

@@ -290,7 +290,7 @@ def _is_cache_old_and_reachable(cache_dir):
     except:
         logger.warning('Unable to check API, reverting to cache')
         return False
-    if local_commit != get_resource_attributes('')['version']:
+    if local_commit != api_commit:
         logger.info('Cache is outdated, will retrieve the latest commit')
         return True
     else:
@@ -365,7 +365,8 @@ def _get_api():
     for t in [ backbone_th ] + list(site_th.values()):
         t.join()
 
-    data = {'network': {},
+    data = {'version': get_resource_attributes('')['version'],
+            'network': {},
             'sites': {},
             'clusters': {},
             'hosts':  {},
@@ -397,7 +398,7 @@ def _write_api_cache(cache_dir, data):
         with open(cache_dir + e, 'wb') as f:
             dump(d, f)
     with open(cache_dir + 'api_commit', 'w') as f:
-        f.write(data['network']['backbone'][0]['version'])
+        f.write(data['version'])
 
 def _read_api_cache(cache_dir):
     """Read the picke files from cache_dir and return two dicts