tests: pass -vv option to pytest

This should help in cases where it truncates the output.

    E   AssertionError: assert {'aes', 'asim...simdrdm', ...} [...]
    E     Extra items in the left set:
    E     'fp'
    E     'asimdhp'
    E     'sha2'
    E     'ssbs'
    E     'asimd'
    E     'crc32'...
    E
    E     ...Full output truncated (47 lines hidden), use '-vv' to show

Signed-off-by: Pablo Barbáchano <pablob@amazon.com>

tests/pytest.ini

@@ -2,6 +2,7 @@
 ; Omit verbose tracebacks, since they tend to pollute the output.
 addopts =
     --tb=short
+    -vv
     --durations=10
     --showlocals
     -m 'not nonci and not no_block_pr'