remove deprecated krbV support

Fixes: https://pagure.io/koji/issue/1991

builder/kojid

@@ -69,12 +69,6 @@ from koji.tasks import (
 )
 from koji.util import dslice, dslice_ex, isSuccess, parseStatus, to_list
 
-try:
-    import krbV
-    Krb5Error = krbV.Krb5Error
-except ImportError:  # pragma: no cover
-    krbV = None
-
 try:
     import requests_kerberos
     Krb5Error = requests_kerberos.exceptions.RequestException
@@ -6454,10 +6448,6 @@ def get_options():
                 'host_principal_format': 'compile/%s@EXAMPLE.COM',
                 'keytab': '/etc/kojid/kojid.keytab',
                 'ccache': '/var/tmp/kojid.ccache',
-                'krbservice': 'host',
-                'krb_rdns': True,
-                'krb_canon_host': False,
-                'krb_server_realm': None,
                 'server': None,
                 'user': None,
                 'password': None,
@@ -6501,8 +6491,7 @@ def get_options():
                     quit("value for %s option must be a valid integer" % name)
             elif name in ['offline_retry', 'use_createrepo_c', 'createrepo_skip_stat',
                           'createrepo_update', 'use_fast_upload', 'support_rpm_source_layout',
-                          'krb_rdns', 'krb_canon_host', 'build_arch_can_fail', 'no_ssl_verify',
-                          'log_timestamps']:
+                          'build_arch_can_fail', 'no_ssl_verify', 'log_timestamps']:
                 defaults[name] = config.getboolean('kojid', name)
             elif name in ['plugin', 'plugins']:
                 defaults['plugin'] = value.split()
@@ -6608,14 +6597,14 @@ if __name__ == "__main__":
             quit("Error: Unable to log in. Bad credentials?")
         except requests.exceptions.ConnectionError:
             quit("Error: Unable to connect to server %s" % (options.server))
-    elif krbV or requests_kerberos:
+    elif requests_kerberos:
         krb_principal = options.krb_principal
         if krb_principal is None:
             krb_principal = options.host_principal_format % socket.getfqdn()
         try:
-            session.krb_login(principal=krb_principal,
-                              keytab=options.keytab,
-                              ccache=options.ccache)
+            session.gssapi_login(principal=krb_principal,
+                                 keytab=options.keytab,
+                                 ccache=options.ccache)
         except Krb5Error as e:
             quit("Kerberos authentication failed: %s" % e.args)
         except socket.error as e: