krb5 commit [krb5-1.15]: Disable canonicalization in ccselect tests

https://github.com/krb5/krb5/commit/387d5d333e82b3b0858c48d5f7c541ef122e36b6
commit 387d5d333e82b3b0858c48d5f7c541ef122e36b6
Author: Greg Hudson <[email protected]>
Date:   Wed Jul 4 16:11:45 2018 +0000

    Disable canonicalization in ccselect tests
    
    DNS canonicalization can interfere with the fallback tests by changing
    "localhost" to have multiple components, or (less likely) changing the
    parent domain of foo.krbtest.com or foo.krbtest2.com.
    
    (cherry picked from commit b5457d8fb719a583b89e1ace186301a144e2c4c9)

 src/tests/gssapi/t_ccselect.py |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/tests/gssapi/t_ccselect.py b/src/tests/gssapi/t_ccselect.py
index 6be6b4e..65d1297 100755
--- a/src/tests/gssapi/t_ccselect.py
+++ b/src/tests/gssapi/t_ccselect.py
@@ -24,10 +24,13 @@
 
 from k5test import *
 
-# Create two independent realms (no cross-realm TGTs).
-r1 = K5Realm(create_user=False)
-r2 = K5Realm(create_user=False, realm='KRBTEST2.COM', portbase=62000,
-             testdir=os.path.join(r1.testdir, 'r2'))
+# Create two independent realms (no cross-realm TGTs).  For the
+# fallback realm tests we need to control the precise server hostname,
+# so turn off DNS canonicalization.
+conf = {'libdefaults': {'dns_canonicalize_hostname': 'false'}}
+r1 = K5Realm(create_user=False, krb5_conf=conf)
+r2 = K5Realm(create_user=False, krb5_conf=conf, realm='KRBTEST2.COM',
+             portbase=62000, testdir=os.path.join(r1.testdir, 'r2'))
 
 host1 = 'p:' + r1.host_princ
 host2 = 'p:' + r2.host_princ