handle self signed certificates for http client

[dtrifiro]

No description provided.

[dtrifiro]

The user can specify whether TLS is enabled in the config, and provide a custom ca certificate, which will be used to validate the requests:

caikit-nlp-client/src/caikit_nlp_client/http_client.py

Lines 11 to 18 in 20791c6

	class HTTPConfig:
	host: str
	port: int
	tls: bool = False
	mtls: bool = False
	client_key_path: Optional[str] = None
	client_crt_path: Optional[str] = None
	ca_crt_path: Optional[str] = None

caikit-nlp-client/src/caikit_nlp_client/http_client.py

Lines 47 to 59 in 20791c6

	if self.tls or self.mtls:
	if http_config.ca_crt_path:
	self.ca_crt_path = http_config.ca_crt_path
	else:
	raise ValueError(
	"The CA cert is required for TLS and mTlS configuration"
	)
	if self.mtls:
	if http_config.client_crt_path and http_config.client_key_path:
	self.client_crt_path = http_config.client_crt_path
	self.client_key_path = http_config.client_key_path
	else:
	raise ValueError("Client key and certificates are required for mTLS")