Remove necessary resetting of 2 select default global configurations in FlexibleSavingsInterestPostingIntegrationTest. Fixes issue where global configurations were affecting state between integration tests. This caused LoanReschedulingWithinCenterTest to fail on the first day of the month only because the "skip-repayment-on-first-day-of-month" configuration was modified but never reset by GlobalConfigurationTest. Also updated other integration tests to reset and verify default global configurations. FINERACT-722