Switch to comma-seperated string

Author: alahiff

simvue/client.py

@@ -62,7 +62,7 @@ def get_runs(self, filters, system=False, tags=False, metadata=False):
         Get runs
         """
         params = {'name': None,
-                  'filters': filters,
+                  'filters': ','.join(filters),
                   'system': system,
                   'tags': tags,
                   'metadata': metadata}