Added unit test for RF Cavity emittance growth.
Added unit test for RF Cavity emittance growth.

frib-high-level-controls/FLAME,frib-high-level-controls/FLAME,frib-high-level-controls/FLAME,mdavidsaver/jmbgsddb,frib-high-level-controls/FLAME,mdavidsaver/jmbgsddb,frib-high-level-controls/FLAME,mdavidsaver/jmbgsddb,frib-high-level-controls/FLAME,mdavidsaver/jmbgsddb