[Ingest Manager] Add support for Custom CA and TLS options when configuring the integration.

[ph]

#72718

Some integrations (mostly metricbeat) allow to define TLS options on the module. We should allow a user to configure the options:

• Certificate authorities (common): when authenticating the server.
• Certificate: required when doing mutual authentication.
• Certificate private key: required when doing mutual authentication.
• key_passphrase: used to decode the private key.
• verification_mode (advanced): Control how the client verifies the server.
• supported protocol (advanced): define which version of TLS to use.
• cipher_suites (advanced): Define which cipher is supported, required in some lock down environment.
• curve_types (advanced): Define which ECDH curve to use.
• renegotiation (advanced): Configure TLS renegotiation
• client_authentication (advanced): Configure client authentication.
• ca_sha256 (advanced): This configures a certificate pin that you can use to ensure that a specific certificate is part of the verified chain.

[elasticmachine]

Pinging @elastic/ingest-management (Team:Ingest Management)

[ph]

Can we make a stop gap feature to allow a user to define the option in a yaml box and have them reference a local path?

[jen-huang]

Closing this until #72718 (design task) is designed and specc'd.