Adds initial GeoNetwork harvester service calls.

Adds harvester 'status' check.
Changes formatting to PEP8 for parts of code.
Adds geonetwork config to extern.yml
Adds harvester creation to service

Only GeoPortal (geoPREST) harvester type supported
Partial implementation of resetharvester
Refactors harvester XML builder
Modifies RR parameter usage.
Adds remaining harvester functionality for M057

Adds remove, run, start and stop commands
Adds ogcwxs (SOS) harvester type
Merge pull request #17 from birdage/master

Updates neptune services
Merge pull request #18 from oceanzus/m057_harvester

Adds M057 GeoNetwork harvester service calls
fixed importer service error relating to inclosed info tag
fix missing close tag on info node
Merge pull request #19 from birdage/importer_tag_fix

fix missing close tag on info node
inital commit of resync service
Merge branch 'master' of github.com:birdage/ooi-extern-1 into m057_resync_service