Add config.OverrideInsecureSkipVerify to allow for skipping cert verification

[jordan-bonecutter]

My use case:

• I have a Neo4J instance running on an AWS EC2 server. This server has a DNS entry for its public IP so that I can issue it a trusted certificate using certbot
• I would like to access this instance over TLS inside the same VPC, using the internal address
• The simplest way to do this is to change the hostname in the URI to the private VPC IP address and skip certificate verification. This is reasonably safe because I am connecting to an IP address within my VPC which I can expect to be a trusted service.
• I would also prefer to disable the server from accepting plaintext bolt connections as this is a security issue.
• Setting TlsConfig.InsecureSkipVerify in the configurers func in NewDriverWithContext is always overridden by connector.go:172.
• Add a new field in the config to allow for overriding the value inferred from the URI for such a use case.