basic-tutorial.md -- name should not equal server_name

[rebeccc]

What went wrong?

On line 85 of basic-tutorial.md, the call to Credentials fails because it is server_name and not server_hostbased_name

How do we reproduce?

Based on the tutorial, you set server_name and server_hostbased_name as follows:

server_hostbased_name = gssapi.Name('HTTP@' + FQDN, name_type=gssapi.NameType.hostbased_service)
server_name = gssapi.Name('HTTP/sross@')

and then make a call to Credentials using server_name rather than server_hostbased_name, which causes it to fail.

server_creds = gssapi.Credentials(usage='accept', name=server_name)

[rebeccc]

There are a couple of other places in the tutorial that uses server_name instead of server_hostbased_name. I've made a list of the ones I realized wouldn't work.

this one is just in a sequence of checks and doesn't fail, but will show up false.
line 103:

server_creds.name == server_name

line 128:

client_ctx = gssapi.SecurityContext(name=server_name, usage='initiate')

[frozencemetery]

Fixed by #209