cloudutils: fix adding rocky9 host failure due to missing /etc/sysconfig/libvirtd (#7779)

python/lib/cloudutils/configFileOps.py

@@ -15,6 +15,7 @@
 # specific language governing permissions and limitations
 # under the License.
 import re
+import os
 import tempfile
 import shutil
 from .utilities import bash
@@ -59,8 +60,9 @@ class configFileOps:
             return ""
 
     def save(self):
-        fp = open(self.fileName, "r")
         newLines = []
+        if os.path.exists(self.fileName) and os.path.isfile(self.fileName):
+            fp = open(self.fileName, "r")
             for line  in fp.readlines():
                 matched = False
                 for entry in self.entries:
@@ -93,6 +95,8 @@ class configFileOps:
                 if not matched:
                     newLines.append(line)
 
+            fp.close()
+
         for entry in self.entries:
             if entry.getState() != "set":
                 if entry.op == "add":
@@ -101,8 +105,6 @@ class configFileOps:
                     self.backups.append([None, newline])
                     entry.setState("set")
 
-        fp.close()
-
         open(self.fileName, "w").writelines(newLines)
 
     def replace_line(self, startswith,stanza,always_add=False):