test/crypto: fix number of queue pairs

test/crypto: fix number of queue pairs

Some of the tests use a QAT-specific value (2) for
maximum nr of queue pairs to create valid/invalid test cases.
This has accidentally worked ok as default max_qps for all PMDs
is larger. It is incorrect however and would fail if a device
had a max lower than the QAT value.
Instead use the value returned by the PMD in the
rte_cryptodev_get_info query, this value is stored in the ts_params.

Fixes: 202d375c60bc ("app/test: add cryptodev unit and performance tests")
Cc: stable@dpdk.org
Signed-off-by: Fiona Trahe <fiona.trahe@intel.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>