Make Peer Forwarding secure by default

[asifsmohammed]

Currently core peer forwarder has a limitation of creating beans with ssl as true by default.

Solution 1:
Make ssl false by default.
Solution 2:
Have a configuration with default values for ssl certificate file and key file.
Solution 3:
Make Data Prepper use a configuration file while building beans where ssl is disabled.

[dlvenable]

When the peer-forwarder runs, we can enable SSL by default. I also suggest that the default SSL be to look into the config/ directory for known file names.

Perhaps: config/certificate.pem and config/private_key.pem? I'm open to other names.

We can bundle Data Prepper with predefined values here. These can also be used by the Data Prepper server, OTel server, HTTP server, etc.

[dlvenable]

This should include using Mutual TLS for authentication by default as well.

[dlvenable]

It might be better to use a different name by default which clarifies that the certificate is the default one.

Perhaps:

config/default_certificate.pem
config/default_private_key.pem