Host & Port not hardcoded anymore

[laszlolm]

Solving #1983

[szpasztor]

Please wait for #1975 as some of the code that needs to be changed isn't merged yet.

[vctt94]

I believe this startRpcRequestFunc method needs a refactor, because it is an old method we used to use, but a lot have changed on how decrediton and daemon are started.

Right now credentials are coming from the launchDCRD method, so this change are not really having effect at the code.

If you do console.log(cfg.get("rpc_host")), for example, it will probably be undefined, because they are not at the config file. Unless you manually added it.

[alexlyp]

Sort of bouncing off of @vctt94's comment, but yah I believe these changes are essentially a noop. But it does make everything more consistent so I'm willing to change it.

Overall as @vctt94 mentioned the function should probably be refactored at some point.