Apache Spark

At this moment relu_layer op doesn't allow threshold configuration, and legacy RELU op allows that.
We should add configuration option to relu_layer.

Describe the bug
If I pass 'Next 7 days' into the dateRange in query, the response is not a range over the next 7 days but only the day IN 7 days.

To Reproduce
Steps to reproduce the behavior:

1. Build a query like this:

const query: Query = {
    measures: [
      measure
    ],
    timeDimensions: [
      {
        dimension: 'Your.Dimension,
        dateRange: 'Next 7

Hi,
I am running the deltaTable = DeltaTable.convertToDelta(spark, f"parquet.{data_path}") to read a DeltaTable from the parquet files but it doesn't return one as suggested in the documents. However, it successfully converts them. If I read them exactly after that line again using forPath, it will give me the DeltaTable.

![image](https://user-images.githubusercontent.com/3591686/12765840

Used Spark version
Spark Version: 2.4.4
Used Spark Job Server version
SJS version: v0.11.1

Deployed mode
client on Spark Standalone

Actual (wrong) behavior
I can't get config, when post a job with 'sync=true'. I got it：
http://localhost:8090/jobs/ff99479b-e59c-4215-b17d-4058f8d97d25/config
{"status":"ERROR","result":"No such job ID ff99479b-e59c-4215-b17d-4058f8d97d25"

I have a simple regression task (using a LightGBMRegressor) where I want to penalize negative predictions more than positive ones. Is there a way to achieve this with the default regression LightGBM objectives (see https://lightgbm.readthedocs.io/en/latest/Parameters.html)? If not, is it somehow possible to define (many example for default LightGBM model) and pass a custom regression objective?