These tokens are only used in Lithium-based streams, but the global
name is slightly confusing. Rename to LithiumPathArgument, which
makes the context more obvious.
JIRA: CONTROLLER-1919
Change-Id: I2b92be4c469de8dffba6e071449b5ae947b9ace8 Signed-off-by: Robert Varga <robert.varga@pantheon.tech>