Full path to module is included in moneyd configuration

[sharafian]

https://github.com/interledgerjs/moneyd-uplink-xrp/blob/master/index.js#L82

We're generating the connector configuration and writing it to moneyd.json, including a path to where the ilp-plugin-xrp-asym-client module can be found. This doesn't play nicely with nvm, which includes the node version in its global node module paths. If you move a moneyd.json from one machine to another, where each machine has a different node version installed, it will cease to work.

We could fix this error by just including the parent, the name, and the secret in the moneyd.json file. Then, every time that moneyd starts, we can generate the actual connector configuration from those fields.