support self-signed certificates in harbor registry

[gnmahanth]

currently while trying to add harbor registry with self signed certificates we get this error

ERROR:root:<class 'requests.exceptions.SSLError'> - HTTPSConnectionPool(host='143.244.128.178.nip.io', port=443): Max retries exceeded with url: /api/search?q= (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1129)')))