LA-2721: c_get_token_info returning incorrect data
LA-2721: c_get_token_info returning incorrect data

* The cryptoki call returns strings which conatain additional data.
The data conversion now extracts the spec defined number of characters
from non-null terminated strings.

Note: The spec calls for the fixed size strings to be " " padded to 32 or 16
characters. Values returned by c_get_token_info has trailing whitespace
stripped from the string.

Change-Id: Ia08c77f553dd1ce150a893c92c2ccfc7edaec928

gemalto/pycryptoki