tests: Add more debug info to caps00 test
tests: Add more debug info to caps00 test

Print all cap values in case of test is failed.
Also check for capset() and capsget() return values.

Signed-off-by: Kirill Tkhai <e5b39230c99b4d3ebd6aa54f6d823f95134bc39d@parallels.com>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@parallels.com>

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