Even i have seen this behavior. You need not add the attributes sslKeysPassword and password to server.conf and inputs.conf respectively. Without you entering these attributes, splunk adds them.
See my other post: https://answers.splunk.com/answers/643307/why-is-the-ssl-connection-between-forwarder-and-in.html
In my case:
a. in server.conf, i did not even have [sslConfig] stanza. Splunk adds that and underneath sslKeysPassword attribute also.
b. In inputs.conf, i had [SSL] stanza but not password attribute. During restart splunk adds password attribute.
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