Allow additional Elasticsearch templates to be loaded to the index

Currently, deployment will only set up templates for Bro, Yaf, and Snort.

Do the following:
1) Relocate the template creation to the metron_streaming role to enable re-running as new topologies are deployed.
2) Glob any *.template files in metron_streaming/files/es_templates and send them to the Elasticsearch index as a PUT _template/basename (i.e. foo.template would be added as PUT _template/foo)

Is there any value to adding a configurable directory location to add additional templates? Could do as part of this effort, but I don't know if there is any need.