Add filename at Error and Warn level in logs

[sauraank]

Description of change

Added filename (object key where filename was not available) at the error level and warn level logs since these are shown by default.

Used span to add the filename on the first occurence of filename in the callstack of the method. This results in logging like -

getattr{req=3 ino=34 name=“hello_new1.txt”}: mountpoint_s3::fuse: getattr failed: inode error: inode 34 (full key “hello_new1.txt”) for remote key “hello_new1.txt” is stale, replaced by inode 35 (full key “hello_new1.txt”)

In the PR #634 , it was getting logged as -

getattr{req=7 ino=2}: mountpoint_s3::fuse: getattr failed: inode error: inode 2 (full key “hello_new.txt”) for remote key “hello_new.txt” is stale, replaced by inode 3 (full key “hello_new.txt”)

Keeping both the PRs for now, in case we dont need the way it is done in this PR.

Also, added filename in all cases of InodeError as it was getting multiple times.

Relevant issues:
#555

Does this change impact existing behavior?

No, it does not change existing behaviour of any functionalities. Only change the error logs.

No breaking changes.

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By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license and I agree to the terms of the Developer Certificate of Origin (DCO).

[passaro]

I like the log entries with the field added to the span. Just a little concerned it may be difficult to enforce that we always fill it consistently.

[sauraank]

I like the log entries with the field added to the span. Just a little concerned it may be difficult to enforce that we always fill it consistently.

Yes, I am filling it at the first occurence of the filename in its call stack. So, any error logged before that wont have filename filled for it.