put back the TZ (re. FINERACT-788)

always best to make only mininmal required change

.travis.yml

@@ -31,6 +31,8 @@ before_install:
   - echo "USE mysql;\nUPDATE user SET password=PASSWORD('mysql') WHERE user='root';\nFLUSH PRIVILEGES;\n" | mysql -u root
   - mysql -u root -pmysql -e 'CREATE DATABASE IF NOT EXISTS `mifosplatform-tenants`;'
   - mysql -u root -pmysql -e 'CREATE DATABASE IF NOT EXISTS `mifostenant-default`;'
+# Hardcoding the time zone is a temporary fix for https://issues.apache.org/jira/browse/FINERACT-723
+  - export TZ=Asia/Kolkata
 
 # https://docs.travis-ci.com/user/languages/java/#caching
 before_cache: