[vSphere] Add SSL/TLS support

The `log` data stream [utilizes](https://github.com/elastic/integrations/blob/main/packages/vsphere/data_stream/log/manifest.yml) both `tcp` and `udp` filebeat inputs. Enabling TLS for the `tcp` input is straightforward; it simply requires adding the `ssl` configuration parameters.

However, the `udp` input does not support TLS in beats. For now, we can proceed by adding the `ssl` configuration parameters to the `tcp` agent config.

@ishleenk17 @lalit-satapathy