meta-openembedded and poky: subtree updates

Squash of the following due to dependencies among them
and OpenBMC changes:

meta-openembedded: subtree update:d0748372d2..9201611135
meta-openembedded: subtree update:9201611135..17fd382f34
poky: subtree update:9052e5b32a..2e11d97b6c
poky: subtree update:2e11d97b6c..a8544811d7

The change log was too large for the jenkins plugin
to handle therefore it has been removed. Here is
the first and last commit of each subtree:

meta-openembedded:d0748372d2
      cppzmq: bump to version 4.6.0
meta-openembedded:17fd382f34
      mpv: Remove X11 dependency
poky:9052e5b32a
      package_ipk: Remove pointless comment to trigger rebuild
poky:a8544811d7
      pbzip2: Fix license warning

Change-Id: If0fc6c37629642ee207a4ca2f7aa501a2c673cd6
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/poky/meta/lib/oeqa/core/target/ssh.py b/poky/meta/lib/oeqa/core/target/ssh.py
index 51032ef..090b40a 100644
--- a/poky/meta/lib/oeqa/core/target/ssh.py
+++ b/poky/meta/lib/oeqa/core/target/ssh.py
@@ -15,7 +15,7 @@
 
 class OESSHTarget(OETarget):
     def __init__(self, logger, ip, server_ip, timeout=300, user='root',
-                 port=None, **kwargs):
+                 port=None, server_port=0, **kwargs):
         if not logger:
             logger = logging.getLogger('target')
             logger.setLevel(logging.INFO)
@@ -30,6 +30,7 @@
         super(OESSHTarget, self).__init__(logger)
         self.ip = ip
         self.server_ip = server_ip
+        self.server_port = server_port
         self.timeout = timeout
         self.user = user
         ssh_options = [
@@ -246,7 +247,7 @@
         "stdin": None,
         "shell": False,
         "bufsize": -1,
-        "preexec_fn": os.setsid,
+        "start_new_session": True,
     }
     options.update(opts)
     output = ''