Ticket 49020 - Add CI test

Description:
Do not treat missing csn as fatal

https://pagure.io/389-ds-base/issue/49020

Reviewed by: lkrispen, mreynolds (Thanks!)

dirsrvtests/tests/tickets/ticket49020_test.py

@@ -0,0 +1,73 @@
+import time
+import ldap
+import logging
+import pytest
+from lib389 import DirSrv, Entry, tools, tasks
+from lib389.tools import DirSrvTools
+from lib389._constants import *
+from lib389.properties import *
+from lib389.tasks import *
+from lib389.utils import *
+from lib389.topologies import topology_m3 as T
+
+DEBUGGING = os.getenv("DEBUGGING", default=False)
+if DEBUGGING:
+    logging.getLogger(__name__).setLevel(logging.DEBUG)
+else:
+    logging.getLogger(__name__).setLevel(logging.INFO)
+log = logging.getLogger(__name__)
+
+
+def test_ticket49020(T):
+    A = T.ms['master1']
+    B = T.ms['master2']
+    C = T.ms['master3']
+
+    A.enableReplLogging()
+    B.enableReplLogging()
+    C.enableReplLogging()
+
+    AtoB = A.agreement.list(suffix=DEFAULT_SUFFIX)[0].dn
+    AtoC = A.agreement.list(suffix=DEFAULT_SUFFIX)[1].dn
+    CtoB = C.agreement.list(suffix=DEFAULT_SUFFIX)[1].dn
+
+    A.agreement.pause(AtoB)
+    C.agreement.pause(CtoB)
+    time.sleep(5)
+    name = "userX"
+    dn = "cn={},{}".format(name, DEFAULT_SUFFIX)
+    A.add_s(Entry((dn, {'objectclass': "top person".split(),
+                        'sn': name,'cn': name})))
+
+    A.agreement.init(DEFAULT_SUFFIX, HOST_MASTER_3, PORT_MASTER_3)
+
+    time.sleep(5)
+    for i in range(1,11):
+        name = "userY{}".format(i)
+        dn = "cn={},{}".format(name, DEFAULT_SUFFIX)
+        A.add_s(Entry((dn, {'objectclass': "top person".split(),
+                            'sn': name,'cn': name})))
+    time.sleep(5)
+    C.agreement.resume(CtoB)
+
+    time.sleep(5)
+    A_entries = A.search_s(DEFAULT_SUFFIX, ldap.SCOPE_SUBTREE,
+                         '(objectClass=person)')
+    B_entries = B.search_s(DEFAULT_SUFFIX, ldap.SCOPE_SUBTREE,
+                         '(objectClass=person)')
+    C_entries = C.search_s(DEFAULT_SUFFIX, ldap.SCOPE_SUBTREE,
+                         '(objectClass=person)')
+
+    assert len(A_entries) == len(C_entries)
+    assert len(B_entries) == len(A_entries) - 11
+    if DEBUGGING:
+        # Add debugging steps(if any)...
+        pass
+
+
+if __name__ == '__main__':
+    # Run isolated
+    # -s for DEBUG mode
+    CURRENT_FILE = os.path.realpath(__file__)
+    pytest.main("-s %s" % CURRENT_FILE)
+