modify fstab, check partitions

modified:   dialog/di_dialog.py
	modified:   interface/ri_oper.py
	modified:   operation/configure_fstab.sh

interface/ri_oper.py

@@ -226,7 +226,14 @@ class ConfigureFstab(Mount):
             if ri_data.MountPoint.dict[k].filesystem == 'swap':
                 fstab += '/dev/%s swap swap\n' %k
                 break
-        return fstab    
+
+        # process fstab to sort
+        fstab_new = ''
+        cmd_t = "echo '%s' | sort -k 2" %fstab
+        std_out = os.popen(cmd_t).readlines()
+        for l in std_out:
+            fstab_new += l
+        return fstab_new
 
 class GenerateIssue(Operation):
     """class for generate /etc/issue"""