DataDir returns a filesystem path to the folder used by juju to store tools, charms, locks, etc
JujuRun returns the absolute path to the juju-run binary for a particula series
LogDir returns filesystem path the directory where juju may save log files.
func MongorestorePath ¶
mongorestorePath will look for mongorestore binary on the system and return it if mongorestore actually exists. it will look first for the juju provided one and if not found make a try at a system one.