Add support to walk through /redfish/v1 using plugin

Changes:
     - Add check for plugin response if dictionary
     - Add new redfish plugin module
     - Add entry in the YAML

Tested:
      - With plugin
      - Generic existing testing

Change-Id: I71291e337d0a064bbe024fbef193380ec3cfb8ad
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/ffdc/ffdc_collector.py b/ffdc/ffdc_collector.py
index 95d4fa7..e33fb84 100644
--- a/ffdc/ffdc_collector.py
+++ b/ffdc/ffdc_collector.py
@@ -470,7 +470,10 @@
 
                 # Creates a new file
                 with open(targ_file_with_path, 'w') as fp:
-                    fp.write(result)
+                    if isinstance(result, dict):
+                        fp.write(json.dumps(result))
+                    else:
+                        fp.write(result)
                     fp.close
                     executed_files_saved.append(targ_file)