Get a value from a db, using a uri in the form of sdb://<profile>/<key>. If
the uri provided does not start with sdb://, then it will be returned as-is.
CLI Example:
salt '*' sdb.get sdb://mymemcached/foo
salt.modules.sdb.set_(uri, value)
Set a value in a db, using a uri in the form of sdb://<profile>/<key>.
If the uri provided does not start with sdb:// or the value is not
successfully set, return False.