Merge pull request #4139 from RosettaCommons/BYachnin/antibody_cst_mover_fixes
Make antibody constraint mover rosetta_scripts "compliant"
The ParatopeSiteConstraintMover and ParatopeEpitopeSiteConstraintMover had a couple of issues preventing their use in rosetta_scripts:
-They did not have a clone() function, causing rscripts to error out if they were used.
-There was a mismatch between parse_my_tag and provide_xml_schema for the option interface_distance or interface_dis.
This is a quick fix for these two issues in both movers.