Flush stdout when listing keys + bump verbose level for GPU count

[ajanicijamd]

• flush stdout when listing keys to prevent overlap with stderr logging
• Report GPU device count at verbose level 1 instead of 0

[ajanicijamd]

This is a fix for the failing test in SWDEV-466924: test omnitrace-avail-list-keys, which runs command omnitrace-avail --list-keys --expand-keys is failing because the command writes some output to stdout and some to stderr, and ctest redirects them both to the same file, where they get mixed, so the strings that the test is supposed to find ((.)%argv%(.)%argv_hash%) is broken in the log file. The fix is to write everything to stdout.

[jrmadsen]

Additionally

https://github.com/ROCm/omnitrace/blob/f0bd9126a5456eb9e511d13261af262d17d9b61b/source/bin/omnitrace-avail/avail.cpp#L524

and

https://github.com/ROCm/omnitrace/blob/f0bd9126a5456eb9e511d13261af262d17d9b61b/source/bin/omnitrace-avail/avail.cpp#L529

can be bumped to level 1 or 2.

[ajanicijamd]

I made those changes. Bumped the logging level to 1 for those two calls of verbprintf.