healthcheck: many pylint fixes
healthcheck: many pylint fixes

Notably, long lines, space between function name and arguments.

earies/exabgp,benagricola/exabgp,blablacar/exabgp,blablacar/exabgp,earies/exabgp,dneiter/exabgp,benagricola/exabgp,earies/exabgp,dneiter/exabgp,blablacar/exabgp,dneiter/exabgp,benagricola/exabgp