Add or update a permission on the DataSHIELD service.
Examples
if (FALSE) { # \dontrun{
o <- opal.login('administrator','password', url='https://opal-demo.obiba.org')
dsadmin.perm_add(o, c('andrei', 'valentina'), 'user', 'use')
dsadmin.perm(o)
dsadmin.perm_delete(o, c('andrei', 'valentina'), 'user')
opal.logout(o)
} # }