ipareplica: Add support for 4.7 (4.6.90-pre2)

With IPA 4.7 bigger changes have been introduced

Changes:
- Use of timeconf and chrony instead of ntpconf and ntpd.
- custodia instance needed for ca and kra
- Use of create_ipa_conf with changed setting in setup_http for install_http,
  reverted back afterwards.

module_utils/ansible_ipa_replica.py

@@ -59,7 +59,6 @@ if NUM_VERSION >= 40600:
     import six
 
     from ipaclient.install.ipachangeconf import IPAChangeConf
-    import ipaclient.install.ntpconf
     from ipalib.install import certstore, sysrestore
     from ipalib.install.kinit import kinit_keytab
     from ipapython import ipaldap, ipautil, kernel_keyring
@@ -78,8 +77,7 @@ if NUM_VERSION >= 40600:
     from ipaserver.install import (
         adtrust, bindinstance, ca, certs, dns, dsinstance, httpinstance,
         installutils, kra, krbinstance,
-        ntpinstance, otpdinstance, custodiainstance, service,
-        upgradeinstance)
+        otpdinstance, custodiainstance, service, upgradeinstance)
     from ipaserver.install.installutils import (
         create_replica_config, ReplicaConfig, load_pkcs12, is_ipa_configured)
     from ipaserver.install.replication import (
@@ -103,6 +101,18 @@ if NUM_VERSION >= 40600:
     if six.PY3:
         unicode = str
 
+    try:
+        from ipaclient.install import timeconf
+        time_service = "chronyd"
+        ntpinstance = None
+    except ImportError:
+        try:
+            from ipaclient.install import ntpconf as timeconf
+        except ImportError:
+            from ipaclient import ntpconf as timeconf
+        from ipaserver.install import ntpinstance
+        time_service = "ntpd"
+
 else:
     # IPA version < 4.6