Redefine "file" connection structure

[shlomitk1]

The current connection is defined in asset.yaml as follows:

connection:
      name: file
      file:
        connector: "airbyte/source-file"
        dataset_name: userdata
        format: parquet
        url: "https://github.com/Teradata/kylo/raw/master/samples/sample-data/parquet/userdata2.parquet"
        provider:
          storage: HTTPS

A number of issues:

1. Name "file" is misleading. Files can be local or remote, and not necessarily all connectors supporting one type, support another. Thus, I suggest changing the name. "remote"/"https" - suggestions are welcome.
2. "connector" property is an implementation detail, not a part of the connection. It should be determined in module charts.
3. "provider" is redundant since "https" appears in the url, unless I am missing here something.
4. "dataset_name" is 1. redundant and 2. incorrect since it appears in the url as userdata2.
5. format is not a part of the connection, it appears under dataFormat of the asset. I suggest having something like this:

   connection:
     name: remote
     remote:
       protocol: HTTPS
       host: "github.com"
       folder: "Teradata/kylo/raw/master/samples/sample-data/parquet"
       file: "userdata2.parquet"

   or

   connection:
     name: https
     https:
       url: "https://github.com/Teradata/kylo/raw/master/samples/sample-data/parquet/userdata2.parquet"

The connection should be defined in Fybrik in a custom layer pkg/storage/layers/connection.yaml @cdoron @Mohammad-nassar10 @revit13 @simanadler