Suppress grpc warnings (#1504)

## Changes

New `grpcio` lib (which is a dependency of `databricks-connect` package)
produces warnings when you run any code.

I've notified `databricks-connect` developers to solve it on their side,
but in the meantime we can suppress warnings with the env vars

Fixes #1478

Author: ilia-db

packages/databricks-vscode/resources/python/00-databricks-init.py

@@ -492,6 +492,10 @@ def make_matplotlib_inline():
     import sys
 
     print(sys.modules[__name__])
+
+    # Suppress grpc warnings coming from databricks-connect with newer version of grpcio lib
+    os.environ["GRPC_VERBOSITY"] = "NONE"
+
     if not load_env_from_leaf(os.getcwd()):
         sys.exit(1)
     cfg = LocalDatabricksNotebookConfig()

packages/databricks-vscode/resources/python/dbconnect-bootstrap.py

@@ -32,6 +32,9 @@ def load_env_file_from_cwd(path: str):
     logging.error(f"Failed to get current directory: {e}")
     cur_dir = os.getcwd()
 
+# Suppress grpc warnings coming from databricks-connect with newer version of grpcio lib
+os.environ["GRPC_VERBOSITY"] = "NONE"
+
 root_dir = os.getcwd()
 load_env_file_from_cwd(root_dir)