DNSSEC: store status of services only before first install

DNS installer allows to reinstall DNS and DNSSEC, so the status of
services should be stored only for first time.

Reviewed-By: Petr Spacek <pspacek@redhat.com>

ipaserver/install/odsexporterinstance.py

@@ -146,9 +146,10 @@ class ODSExporterInstance(service.Service):
 
     def __disable_signerd(self):
         signerd_service = services.knownservices.ods_signerd
-
-        self.backup_state("singerd_running", signerd_service.is_running())
-        self.backup_state("singerd_enabled", signerd_service.is_enabled())
+        if self.get_state("singerd_running") is None:
+            self.backup_state("singerd_running", signerd_service.is_running())
+        if self.get_state("singerd_enabled") is None:
+            self.backup_state("singerd_enabled", signerd_service.is_enabled())
 
         # disable default opendnssec signer daemon
         signerd_service.stop()

ipaserver/install/opendnssecinstance.py

@@ -88,8 +88,10 @@ class OpenDNSSECInstance(service.Service):
 
     def create_instance(self, fqdn, realm_name, generate_master_key=True,
                         kasp_db_file=None):
-        self.backup_state("enabled", self.is_enabled())
-        self.backup_state("running", self.is_running())
+        if self.get_state("enabled") is None:
+            self.backup_state("enabled", self.is_enabled())
+        if self.get_state("running") is None:
+            self.backup_state("running", self.is_running())
         self.fqdn = fqdn
         self.realm = realm_name
         self.suffix = ipautil.realm_to_suffix(self.realm)