Provide GCS Support in cache_folder

[divyanshud]

The cache_folder config where models/pipelines are downloaded/extracted and loaded doesn't support GCS at the moment.

I am trying to build spark session and passing the cache_folder config as given below

spark = SparkSession.builder
.config("spark.dynamicAllocation.maxExecutors", "8")
.config("spark.executor.cores", "2")
.config("spark.executor.memory", "8g")
.config("spark.jars.packages","com.johnsnowlabs.nlp:spark-nlp_2.12:4.1.0")
.config("spark.jsl.settings.pretrained.cache_folder","gs://<bucket_name>/spark-nlp/cache_pretrained")
.getOrCreate()

Post downloading the model on usage I got the following error

Py4JJavaError: An error occurred while calling z:com.johnsnowlabs.nlp.pretrained.PythonResourceDownloader.getDownloadSize.
: java.lang.ExceptionInInitializerError
at com.johnsnowlabs.nlp.pretrained.PythonResourceDownloader$.$anonfun$getDownloadSize$1(ResourceDownloader.scala:724)
at scala.Option.getOrElse(Option.scala:189)
at com.johnsnowlabs.nlp.pretrained.PythonResourceDownloader$.getDownloadSize(ResourceDownloader.scala:724)
at com.johnsnowlabs.nlp.pretrained.PythonResourceDownloader.getDownloadSize(ResourceDownloader.scala)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
at py4j.Gateway.invoke(Gateway.java:282)
at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
at py4j.commands.CallCommand.execute(CallCommand.java:79)
at py4j.ClientServerConnection.waitForCommands(ClientServerConnection.java:182)
at py4j.ClientServerConnection.run(ClientServerConnection.java:106)
at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.IllegalArgumentException: Wrong FS: gs://<bucket_name>/spark-nlp/cache_pretrained, expected: file:///