Restore fixed update example in example/load.py

Earlier I'd misread the Scripting and Security page about inline scripts - turns out they are enabled by default. Earlier failures I saw were due to old groovy syntax. Things are working after changing to painless.

Author: veatch

example/load.py

@@ -159,7 +159,7 @@ def load_repo(client, path=None, index='git'):
  {'_type': 'repos', '_id': 'elasticsearch', '_source': {
  'owner': {'name': 'Shay Bannon', 'email': 'kimchy@gmail.com'},
  'created_at': datetime(2010, 2, 8, 15, 22, 27),
- 'tags': ['search', 'distributed', 'lucene', 'java'],
+ 'tags': ['search', 'distributed', 'lucene'],
  'description': 'You know, for search.'}
  },
 
@@ -191,6 +191,21 @@ def load_repo(client, path=None, index='git'):
  es_repo = es.get(index='git', doc_type='repos', id='elasticsearch')
  print('%s: %s' % (es_repo['_id'], es_repo['_source']['description']))
 
+ # update - add java to es tags
+ es.update(
+ index='git',
+ doc_type='repos',
+ id='elasticsearch',
+ body={
+ "script": {
+ "inline" : "ctx._source.tags.add(params.tag)",
+ "params" : {
+ "tag" : "java"
+ }
+ }
+ }
+ )
+
  # refresh to make the documents available for search
  es.indices.refresh(index='git')