cephfs-shell: fixing TestShellOpts in test_cephfs_shell.py

The issue arose due to the change in the output format of the
command `set editor`. Earlier the output format was like:
`editor: 'vim' ` which has been changed to:
```Name    Value                           Description
====================================================================================================
editor  vim                             Program used by 'edit' ```

Due to which fetching the list using indexes was `out of range`.

Introduced by: python-cmd2/cmd2@fd38e70
Fixes: https://tracker.ceph.com/issues/63699
Signed-off-by: Neeraj Pratap Singh <[email protected]>

Author: neeraj pratap singh

qa/tasks/cephfs/test_cephfs_shell.py

@@ -1110,9 +1110,9 @@ def setUp(self):
         # now: '?'
         # editor: '?'
         self.editor_val = self.get_cephfs_shell_cmd_output(
-            'set editor ?, set editor').split('\n')[2]
-        self.editor_val = self.editor_val.split(':')[1]. \
-            replace("'", "", 2).strip()
+            'set editor ?, set editor').split('\n')[4]
+        self.editor_val = self.editor_val.split()[1].strip(). \
+            replace("'", "", 2)
 
     def write_tempconf(self, confcontents):
         self.tempconfpath = self.mount_a.client_remote.mktemp(
@@ -1128,8 +1128,9 @@ def test_reading_conf(self):
         # editor: 'vim'
         final_editor_val = self.get_cephfs_shell_cmd_output(
             cmd='set editor', shell_conf_path=self.tempconfpath)
-        final_editor_val = final_editor_val.split(': ')[1]
-        final_editor_val = final_editor_val.replace("'", "", 2)
+        final_editor_val = final_editor_val.split('\n')[2]
+        final_editor_val = final_editor_val.split()[1].strip(). \
+            replace("'", "", 2)
 
         self.assertNotEqual(self.editor_val, final_editor_val)
 
@@ -1145,8 +1146,9 @@ def test_reading_conf_with_dup_opt(self):
         # editor: 'vim'
         final_editor_val = self.get_cephfs_shell_cmd_output(
             cmd='set editor', shell_conf_path=self.tempconfpath)
-        final_editor_val = final_editor_val.split(': ')[1]
-        final_editor_val = final_editor_val.replace("'", "", 2)
+        final_editor_val = final_editor_val.split('\n')[2]
+        final_editor_val = final_editor_val.split()[1].strip(). \
+            replace("'", "", 2)
 
         self.assertEqual(self.editor_val, final_editor_val)
 
@@ -1160,8 +1162,8 @@ def test_setting_opt_after_reading_conf(self):
         final_editor_val = self.get_cephfs_shell_cmd_output(
             cmd='set editor %s, set editor' % self.editor_val,
             shell_conf_path=self.tempconfpath)
-        final_editor_val = final_editor_val.split('\n')[2]
-        final_editor_val = final_editor_val.split(': ')[1]
-        final_editor_val = final_editor_val.replace("'", "", 2)
+        final_editor_val = final_editor_val.split('\n')[4]
+        final_editor_val = final_editor_val.split()[1].strip(). \
+            replace("'", "", 2)
 
         self.assertEqual(self.editor_val, final_editor_val)