Add stats for module tests

[anilcse]

Currently individual module tests doesn't give any insights. Add stats to the module tests so that it gives some useful information. Something like:

Starting `x/bank` integration tests.
Completed `x/bank` module integration tests.
Total executed: 8/8 queries, 3/4 txs (successful/total)
Failed with errors [only if error]:
...errors here...