In order to enable detailed performance and problem analysis add
upload-pack metrics to the sshd log. The log format for upload-pack log
records is now enhanced to:
- timestamp
- session id
- thread name
- user name
- account id
- message
- command wait time
- command execution time
- time negotiating
- time searching for reuse
- time searching for sizes
- time counting
- time compressing
- time writing
- total time in UploadPack
- bitmap index misses (-1 means no bitmap index available)
- total deltas
- total objects
- total bytes transferred
- client agent
If statistics aren't available e.g. since an exception occurred they are
logged as -1.
Change-Id: I4ec08579cedfeb6a30eb41d2e2a110f4f8eee8fa
73b8fd117c