update releaseWizard.py to support offline gpg key

[magibney]

The release wizard detection of gpg keys fails in the event that the main key is offline (which causes the script output for gpg --list-secret-keys to display slightly differently). This PR introduces a minor tweak to parsing only, to enable gpg key detection to work in such cases.

The relevant section (full flag description from man gpg below) is A # after the initial tags sec or ssb means that the secret key or subkey is currently not usable.

       --list-secret-keys
       -K     List the specified secret keys.  If no keys are specified, then
              all known secret keys are listed.  A # after the initial tags
              sec or ssb means that the secret key or subkey is currently not
              usable.  We also say that this key has been taken offline (for
              example, a primary key can be taken offline by exporting the key
              using the command --export-secret-subkeys).  A > after these
              tags indicate that the key is stored on a smartcard.  See also
              --list-keys.