Fixed unittests

  Use of uninitialized value in -r at t/create-identity-file.t line 13.
  print() on closed filehandle $SSH_KEYGEN at t/create-identity-file.t
  line 19.
  ...

  Use of uninitialized value in -r at t/setup.t line 13.
  Could not mkdir ~/.ssh: No such file or directory at bin/sibs line
  171.
Released version 0.11

       * Fix $ENV{HOME} in unittests