rename Node.set_locked() method => Node.lock for consistency with Cluster.lock
rename Node.set_locked() method => Node.lock for consistency with Cluster.lock

chadmv/plow,Br3nda/plow,Br3nda/plow,chadmv/plow,chadmv/plow,Br3nda/plow,chadmv/plow,Br3nda/plow,chadmv/plow,chadmv/plow,Br3nda/plow,chadmv/plow