Add a user in Opal internal users registry.
See also
Other user functions:
oadmin.user_delete(),
oadmin.user_enable(),
oadmin.user_exists(),
oadmin.user_profile_delete(),
oadmin.user_profiles(),
oadmin.user_reset_password(),
oadmin.users()
Examples
if (FALSE) { # \dontrun{
o <- opal.login('administrator','password', url='https://opal-demo.obiba.org')
pwd <- oadmin.user_add(o, "foo", groups = c("datashield", "CNSIM"))
opal.logout(o)
} # }