This fixed bugs introduced in edc9e030e1
(in https://github.com/apache/fineract/pull/648) which for FINERACT-773
actually broke things more instead of adding the intended feature, cauz:
1. FINERACT_DEFAULT_TENANTDB_HOSTNAME and FINERACT_DEFAULT_TENANTDB_PORT
were meant to be OS Environment Variables, not Java System properties
and so need to be read via System.getenv() not System.getProperty(),
duh!
2. The Travis CI test which was meant to ensure non-regression for this
broke in that same change, because the "|| docker logs" introduced at
the same time would always pass (EITHER because "http" passed OR
if not then "docker logs" would return 0), duh again!
Both were dumb, not sure what I was thinking when I had hacked this.. ;)