Update hostname validator error messages in tests

A recent patch changed the error message from the hostname
validator. Update the tests to reflect this change.

tests/test_xmlrpc/test_dns_plugin.py

@@ -114,7 +114,7 @@ class test_dns(Declarative):
             ),
             expected=errors.ValidationError(name='name',
                 error=u'only letters, numbers, and - are allowed. ' +
-                    u'- must not be the DNS label character'),
+                    u'DNS label may not start or end with -'),
         ),
 
 
@@ -478,7 +478,7 @@ class test_dns(Declarative):
             command=('dnsrecord_add', [dnszone1, u'invalid record'], {'arecord': u'127.0.0.1'}),
             expected=errors.ValidationError(name='name',
                 error=u'only letters, numbers, _, and - are allowed. ' +
-                    u'- must not be the DNS label character'),
+                    u'DNS label may not start or end with -'),
         ),
 
 
@@ -639,7 +639,7 @@ class test_dns(Declarative):
                                                                  'srv_part_target' : u'foo bar'}),
             expected=errors.ValidationError(name='srv_target',
                 error=u'invalid domain-name: only letters, numbers, and - ' +
-                    u'are allowed. - must not be the DNS label character'),
+                    u'are allowed. DNS label may not start or end with -'),
         ),
 
         dict(
@@ -734,7 +734,7 @@ class test_dns(Declarative):
             command=('dnsrecord_add', [dnszone1, dnsres1], {'cnamerecord': u'-.example.com' }),
             expected=errors.ValidationError(name='hostname',
                 error=u'invalid domain-name: only letters, numbers, and - ' +
-                    u'are allowed. - must not be the DNS label character'),
+                    u'are allowed. DNS label may not start or end with -'),
         ),
 
         dict(
@@ -908,7 +908,7 @@ class test_dns(Declarative):
             command=('dnsrecord_add', [revdnszone1, dnsrev1], {'ptrrecord': u'-.example.com' }),
             expected=errors.ValidationError(name='hostname',
                 error=u'invalid domain-name: only letters, numbers, and - ' +
-                    u'are allowed. - must not be the DNS label character'),
+                    u'are allowed. DNS label may not start or end with -'),
         ),
 
         dict(

tests/test_xmlrpc/test_host_plugin.py

@@ -698,7 +698,7 @@ class test_host(Declarative):
             command=('host_add', [invalidfqdn1], {}),
             expected=errors.ValidationError(name='hostname',
                 error=u'invalid domain-name: only letters, numbers, and - ' +
-                    u'are allowed. - must not be the DNS label character'),
+                    u'are allowed. DNS label may not start or end with -'),
         ),
 
 

tests/test_xmlrpc/test_netgroup_plugin.py

@@ -363,7 +363,8 @@ class test_netgroup(Declarative):
             desc='Add invalid host %r to netgroup %r' % (invalidhost, netgroup1),
             command=('netgroup_add_member', [netgroup1], dict(host=invalidhost)),
             expected=errors.ValidationError(name='host',
-             error='only letters, numbers, _, and - are allowed. - must not be the DNS label character'),
+             error='only letters, numbers, _, and - are allowed. ' +
+                    u'DNS label may not start or end with -'),
         ),