EBS CSI Log to file

[fierlion]

Summary

The EBS CSI logs weren't showing up in the host. This is due to a misconfiguration in the logging cli arguments passed to the container.

Implementation details

The configuration required --log_file=/var/log/csi.log and --logtostderr=false as the klog documentation recommends

Testing

Ran with latest CSI Driver image; built a new agent with this change.
I now see the CSI Driver container logs showing up in their expected host directory.

[ec2-user ebs-csi-driver]$ pwd
/var/log/ecs/daemons/ebs-csi-driver
[ec2-user ebs-csi-driver]$ ls
csi.log
[ec2-user ebs-csi-driver]$ cat csi.log
Log file created at: 2023/11/01 18:09:31
Running on machine: 
Binary: Built with gc go1.20.10 for linux/amd64
Log line format: [IWEF]mmdd hh:mm:ss.uuuuuu threadid file:line] msg
I1101 18:09:31.455041       1 driver.go:45] "Driver Information" Driver="csi-driver" Version="v1.0.0"
I1101 18:09:31.639455       1 node_linux.go:55] "Device Path:" Driver="/dev/nvme2n1" VolumeID="vol-0a9c635c74e3da29d" Partition=""
I1101 18:09:31.639471       1 node_linux.go:69] "Device Path:" Driver="/dev/nvme2n1" VolumeID="vol-0a9c635c74e3da29d" Partition=""
I1101 18:09:31.639503       1 node.go:161] "NodeStageVolume: path exists:" exists=false
I1101 18:09:31.639511       1 node.go:172] "NodeStageVolume: creating target dir" target="/mnt/ecs/ebs/ca4e2f08a78e43f698bef10faa5be302_vol-0a9c635c74e3da29d"
...

New tests cover the changes: no

Description for the changelog

Bugfix to log EBS CSI to a file.

Licensing

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.