rpc: fix python style

A bunch of python files in rpc and scripts directories were missing two
blank lines after the opening comments. python3-pycodestyle-2.5.0-2.el8
was unhappy with this

Signed-off-by: Mike Gerdts <mgerdts@nvidia.com>
Change-Id: Iee7f2bd4f0ddd96b2be89949a3aa324b2f9ea43a
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/16003
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>

python/spdk/rpc/app.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2017 Intel Corporation.
 #  All rights reserved.
 
+
 def spdk_kill_instance(client, sig_name):
     """Send a signal to the SPDK process.
 

python/spdk/rpc/bdev.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2017 Intel Corporation.
 #  All rights reserved.
 
+
 def bdev_set_options(client, bdev_io_pool_size=None, bdev_io_cache_size=None, bdev_auto_examine=None,
                      small_buf_pool_size=None, large_buf_pool_size=None):
     """Set parameters for the bdev subsystem.

python/spdk/rpc/blobfs.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2019 Intel Corporation.
 #  All rights reserved.
 
+
 def blobfs_detect(client, bdev_name):
     """Detect whether a blobfs exists on bdev.
 

python/spdk/rpc/env_dpdk.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2019 Intel Corporation.
 #  All rights reserved.
 
+
 def env_dpdk_get_mem_stats(client):
     """Dump the applications memory stats to a file.
 

python/spdk/rpc/iscsi.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2017 Intel Corporation.
 #  All rights reserved.
 
+
 def iscsi_set_options(
         client,
         auth_file=None,

python/spdk/rpc/log.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2017 Intel Corporation.
 #  All rights reserved.
 
+
 def log_set_flag(client, flag):
     """Set log flag.
 

python/spdk/rpc/lvol.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2017 Intel Corporation.
 #  All rights reserved.
 
+
 def bdev_lvol_create_lvstore(client, bdev_name, lvs_name, cluster_sz=None,
                              clear_method=None, num_md_pages_per_cluster_ratio=None):
     """Construct a logical volume store.

python/spdk/rpc/nbd.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2017 Intel Corporation.
 #  All rights reserved.
 
+
 def nbd_start_disk(client, bdev_name, nbd_device):
     params = {
         'bdev_name': bdev_name

python/spdk/rpc/notify.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2018 Intel Corporation.
 #  All rights reserved.
 
+
 def notify_get_types(client):
     return client.call("notify_get_types")
 

python/spdk/rpc/nvme.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2018 Intel Corporation.
 #  All rights reserved.
 
+
 def bdev_nvme_send_cmd(client, name, cmd_type, data_direction, cmdbuf,
                        data=None, metadata=None,
                        data_len=None, metadata_len=None,

python/spdk/rpc/pmem.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2017 Intel Corporation.
 #  All rights reserved.
 
+
 def bdev_pmem_create_pool(client, pmem_file, num_blocks, block_size):
     """Create pmem pool at specified path.
     Args:

python/spdk/rpc/sock.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2021 Intel Corporation.
 #  All rights reserved.
 
+
 def sock_impl_get_options(client, impl_name=None):
     """Get parameters for the socket layer implementation.
 

python/spdk/rpc/subsystem.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2018 Intel Corporation.
 #  All rights reserved.
 
+
 def framework_get_subsystems(client):
     return client.call('framework_get_subsystems')
 

python/spdk/rpc/trace.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2018 Intel Corporation.
 #  All rights reserved.
 
+
 def trace_enable_tpoint_group(client, name):
     """Enable trace on a specific tpoint group.
 

python/spdk/rpc/vfio_user.py

@@ -2,6 +2,7 @@
 #  Copyright (C) 2022 Intel Corporation.
 #  All rights reserved.
 
+
 def vfu_tgt_set_base_path(client, path):
     """Set socket base path.
 

scripts/bpf/trace.py

@@ -4,6 +4,7 @@
 #  All rights reserved.
 #
 
+
 from argparse import ArgumentParser
 from dataclasses import dataclass, field
 from itertools import islice