fix(fingerprint): check for getPeerCertificate fn existence added
fix(fingerprint): check for getPeerCertificate fn existence added

evan82/lamassu-server,lamassu/lamassu-server,joshmh/lamassu-server,lamassu/lamassu-server,naconner/lamassu-server,naconner/lamassu-server,lamassu/lamassu-server,joshmh/lamassu-server,joshmh/lamassu-server,joshmh/lamassu-server,naconner/lamassu-server