Add `sess_lock_*` and `store_retry_count` entries to moduleinfo test

Those entries have been added recently but the test was not updated.
Make output of `use_sasl` entry in moduleinfo test optional

When SASL support is compiled out, this entry is absent. Nonetheless,
test should succeed in a such case.
Merge pull request #121 from vincentbernat/fix/phpinfo-test

Test moduleinfo test