reset upstream subtrees to yocto 2.6

Reset the following subtrees on thud HEAD:

  poky: 87e3a9739d
  meta-openembedded: 6094ae18c8
  meta-security: 31dc4e7532
  meta-raspberrypi: a48743dc36
  meta-xilinx: c42016e2e6

Also re-apply backports that didn't make it into thud:
  poky:
    17726d0 systemd-systemctl-native: handle Install wildcards

  meta-openembedded:
    4321a5d libtinyxml2: update to 7.0.1
    042f0a3 libcereal: Add native and nativesdk classes
    e23284f libcereal: Allow empty package
    030e8d4 rsyslog: curl-less build with fmhttp PACKAGECONFIG
    179a1b9 gtest: update to 1.8.1

Squashed OpenBMC subtree compatibility updates:
  meta-aspeed:
    Brad Bishop (1):
          aspeed: add yocto 2.6 compatibility

  meta-ibm:
    Brad Bishop (1):
          ibm: prepare for yocto 2.6

  meta-ingrasys:
    Brad Bishop (1):
          ingrasys: set layer compatibility to yocto 2.6

  meta-openpower:
    Brad Bishop (1):
          openpower: set layer compatibility to yocto 2.6

  meta-phosphor:
    Brad Bishop (3):
          phosphor: set layer compatibility to thud
          phosphor: libgpg-error: drop patches
          phosphor: react to fitimage artifact rename

    Ed Tanous (4):
          Dropbear: upgrade options for latest upgrade
          yocto2.6: update openssl options
          busybox: remove upstream watchdog patch
          systemd: Rebase CONFIG_CGROUP_BPF patch

Change-Id: I7b1fe71cca880d0372a82d94b5fd785323e3a9e7
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-openembedded/meta-python/recipes-devtools/python/python-automat/0001-setup.py-remove-the-dependency-on-m2r.patch b/meta-openembedded/meta-python/recipes-devtools/python/python-automat/0001-setup.py-remove-the-dependency-on-m2r.patch
index d6def98..c29b659 100644
--- a/meta-openembedded/meta-python/recipes-devtools/python/python-automat/0001-setup.py-remove-the-dependency-on-m2r.patch
+++ b/meta-openembedded/meta-python/recipes-devtools/python/python-automat/0001-setup.py-remove-the-dependency-on-m2r.patch
@@ -1,4 +1,4 @@
-From d5ebe479fc8fe11c5c75e7f35484849320349222 Mon Sep 17 00:00:00 2001
+From 33b70266930c9093712173c4e0c419815b55e313 Mon Sep 17 00:00:00 2001
 From: Derek Straka <derek@asterius.io>
 Date: Fri, 22 Dec 2017 09:07:00 -0500
 Subject: [PATCH] setup.py: remove the dependency on m2r
@@ -11,14 +11,15 @@
 Upstream-Status: Inappropriate (OE specific)
 
 Signed-off-by: Derek Straka <derek@asterius.io>
+
 ---
  setup.py | 10 ----------
  1 file changed, 10 deletions(-)
 
-Index: Automat-0.6.0/setup.py
-===================================================================
---- Automat-0.6.0.orig/setup.py
-+++ Automat-0.6.0/setup.py
+diff --git a/setup.py b/setup.py
+index d360c64..7b4180a 100644
+--- a/setup.py
++++ b/setup.py
 @@ -4,14 +4,6 @@ Setup file for automat
  
  from setuptools import setup, find_packages
@@ -46,4 +47,4 @@
 -        'm2r',
      ],
      install_requires=[
-         "attrs",
+         "attrs>=16.1.0",