:place attribute enhancement to ATN trajectory template

[mmckinzie]

NCEI recommends that we add :place as a global attribute to template to capture more localized or specific locations or bodies of water not captured in the sea name list. These would become searchable keywords at NCEI.

Tasks including adding :place to the ATN satellite data trajectory template and develop ability to harvest appropriate metadata from the ADR (deployment_location field) and RW (Arbitrary Keywords, type listed as 'place'). More generalized locations listed in project titles (e.g., Mid-Atlantic, US West Coast, Mexico) would get added to the RW arbitrary keywords by ATN DC and the more specific deployment by deployment locations (e.g., Virgina Beach, VA; Guadalupe Island; LA-Long Beach Harbor) provided by PI would be added to ADR metadata.