Get Service Keys
get_keys(service)list of key names for active services
Other authentication:
datim_pwd(),
datim_user(),
get_account(),
get_key(),
get_s3key(),
get_services(),
load_secrets(),
pano_pwd(),
pano_user(),
pdap_access(),
pdap_bucket(),
pdap_secret(),
set_account(),
set_datim(),
set_email(),
set_key(),
set_pano(),
set_s3keys()
if (FALSE) { # \dontrun{
get_keys('<service-name>')} # }