[CSL-1621] Generalize 'printFlags' to 'MonadIO'
[CSL-1621] Generalize 'printFlags' to 'MonadIO'

input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl,input-output-hk/cardano-sl,input-output-hk/pos-haskell-prototype,input-output-hk/cardano-sl,input-output-hk/cardano-sl,input-output-hk/pos-haskell-prototype