Add connection retry when password is not specified.
Add connection retry when password is not specified.

shoma/mycli,martijnengler/mycli,tkuipers/mycli,adamchainz/mycli,D-e-e-m-o/mycli,jinstrive/mycli,D-e-e-m-o/mycli,douglasvegas/mycli,mattn/mycli,suzukaze/mycli,MnO2/rediscli,steverobbins/mycli,thanatoskira/mycli,nkhuyu/mycli,mdsrosa/mycli,qbdsoft/mycli,suzukaze/mycli,MnO2/rediscli,danieljwest/mycli,shaunstanislaus/mycli,shaunstanislaus/mycli,fw1121/mycli,ksmaheshkumar/mycli,thanatoskira/mycli,mattn/mycli,ZuoGuocai/mycli,mdsrosa/mycli,ZuoGuocai/mycli,jinstrive/mycli,oguzy/mycli,evook/mycli,shoma/mycli,qbdsoft/mycli,j-bennet/mycli,chenpingzhao/mycli,ksmaheshkumar/mycli,webwlsong/mycli,chenpingzhao/mycli,douglasvegas/mycli,j-bennet/mycli,fw1121/mycli,nkhuyu/mycli,danieljwest/mycli,evook/mycli,tkuipers/mycli,oguzy/mycli,brewneaux/mycli,webwlsong/mycli,martijnengler/mycli,adamchainz/mycli,brewneaux/mycli