SD-514 : Ingest package don't fetch subitems and on ingest preview an error is showed

Fixed fetch package ingest issue, added behave test for fetch ingest
package and for archive pakage ingest, changed json_match to support
partial matching on lists added mock data for reuters provider
SD-514 : Ingest package don't fetch subitems and on ingest preview an error is showed

Added missing changes on test.py file
SD-514 : Ingest package don't fetch subitems and on ingest preview an error is showed

Deleted the application related import from steps.
SD-514 : Ingest package don't fetch subitems and on ingest preview an error is showed

Fixed delete of Redis keys in the case of package items
Merge pull request #161 from ioanpocol/master

SD-514 : Ingest package don't fetch subitems and on ingest preview an error is showed