Forward port various iscsi fixes from 5.4 iscsi work

This patch contains the following small fixes:
- There is no need to convert None as username/pass into an empty string
  pylibiscsi will happily take either
- Only set the initiator name from ibft if the ibft flag is present
- Show an error when no username is specified, but a password /
  reverse username / pass is given
- Do not backtrace when the following happens:
  1) Manually add iscsi disk
  2) enter wrong IP / username without pass
  3) Fix this *and* change the initiator name initially choosen
- Allow having only a reverse password without a reverse username

1 files changed, 0 insertions, 9 deletions

diff --git a/textw/partition_text.py b/textw/partition_text.py
index 1a790ca2f..48b7c1810 100644
--- a/textw/partition_text.py
+++ b/textw/partition_text.py
@@ -223,15 +223,6 @@ class PartitionTypeWindow:
 
         (user, pw, user_in, pw_in) = entries[2:]
 
-        if len(user) == 0:
-            user = None
-        if len(pw) == 0:
-            pw = None
-        if len(user_in) == 0:
-            user_in = None
-        if len(pw_in) == 0:
-            pw_in = None
-
         target = entries[0].strip()
         try:
             idx = target.rfind(":")