Problem: While encoding the following lines in common/OpTestIPMI file got the below error.     #                   0x00 – success     #                   0x81 – Not a valid image in golden SPI. SyntaxError: Non-ASCII character '\xe2' in file op-test-framework/common/OpTestIPMI.py on line 563, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details
Problem: While encoding the following lines in common/OpTestIPMI file
got the below error.
    #                   0x00 – success
    #                   0x81 – Not a valid image in golden SPI.
SyntaxError: Non-ASCII character '\xe2' in file
op-test-framework/common/OpTestIPMI.py on line 563, but no
encoding declared; see http://python.org/dev/peps/pep-0263/ for
details

To fix the above error need to add 'utf8' encoding

Signed-off-by: Nageswara R Sastry <39fb67ed486da3a4dfc9c913013e7efc83206ee6@linux.vnet.ibm.com>

open-power/op-test-framework,open-power/op-test-framework,open-power/op-test-framework