iscsi.startup should not login to targets as we are already logged in (#470230)

iscsi.startup contains:

        for t in self.targets:
            if not t.discover():
                continue
            t.login()

However all targets in the self.targets list are added through
iscsi.addTarget(), which does:

        t = iscsiTarget(ipaddr, port, user, pw, user_in, pw_in)
        if not t.discover():
            return
        if not t.login():
            return
        self.targets.append(t)

So we are already logged in to all the targets in self.targets, this relogin
attempts are harmless (other then making adding iscsi targets slower then
necessary), but do result in these messages on tty5:
iscsiadm: could not login to [.......]:
iscsiadm: initiator reported error (15 - already exists)

1 files changed, 0 insertions, 5 deletions

diff --git a/iscsi.py b/iscsi.py
index f65e0dbb1..51640b58e 100644
--- a/iscsi.py
+++ b/iscsi.py
@@ -459,11 +459,6 @@ class iscsi(object):
 
         self._startIscsiDaemon()
 
-        for t in self.targets:
-            if not t.discover():
-                continue
-            t.login()
-
         if intf:
             w.pop()