* Enabling the specification of a default authority, if no default is found then the first available authority is selected
* PEP8
* Skipping tests relying on keytool
When exporting a certificate, the password is an optional parameter.
When a password is not supplied by the caller, a default password is
generated by the method. The generation library creates the random
password as a bytes object. The bytes object raises an error in the
'keytool' command used to export the certificate. The keytool is
expecting the password to be a str object.
The fix is to decode the generated password from a bytes object to a str
object.
The associated Java plugin tests have been updated to verify the export
method returns the password as a str object. In addition, the tests have
been updated to correctly test the export methods response object. The
original tests treated the response as a single object. The current
export methods return a tuple of data (type, password, data).
In order to make the tests compatible with both Python2 and Python3, the
'six' library was used to test the password is in fact a string.
