* src/main.c: The --secure-protocol option accepts also values TLSv1_1
and TLSv1_2, as mentioned in the man page. However the help message
doesn't mention these two values. This patch adds TLSv1_1 and TLSv1_2 as
possible values to the help message.
Signed-off-by: Tomas Hozza <thozza@redhat.com>