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-extended/python-blivet/python3-blivet/0003-support-infinit-timeout.patch b/meta-openembedded/meta-python/recipes-extended/python-blivet/python3-blivet/0003-support-infinit-timeout.patch
index 489fb56..38f061e 100644
--- a/meta-openembedded/meta-python/recipes-extended/python-blivet/python3-blivet/0003-support-infinit-timeout.patch
+++ b/meta-openembedded/meta-python/recipes-extended/python-blivet/python3-blivet/0003-support-infinit-timeout.patch
@@ -1,7 +1,7 @@
-From 923265e04df5920fc99393aa05f584032aa1b383 Mon Sep 17 00:00:00 2001
+From 325898f3f2951bbde07da47888175c427b11ddc3 Mon Sep 17 00:00:00 2001
 From: Hongxu Jia <hongxu.jia@windriver.com>
 Date: Mon, 8 May 2017 16:18:02 +0800
-Subject: [PATCH 03/13] support infinit timeout
+Subject: [PATCH 03/11] support infinit timeout
 
 Upstream-Status: Pending
 
@@ -11,10 +11,10 @@
  1 file changed, 8 insertions(+), 4 deletions(-)
 
 diff --git a/blivet/util.py b/blivet/util.py
-index d4bd9bb..44a2da5 100644
+index 05a253c..d6804be 100644
 --- a/blivet/util.py
 +++ b/blivet/util.py
-@@ -158,6 +158,7 @@ class Path(str):
+@@ -157,6 +157,7 @@ class Path(str):
      def __hash__(self):
          return self._path.__hash__()
  
@@ -22,7 +22,7 @@
  def timeout_command(argv, timeout, *args, **kwargs):
      """call shell-command and either return its output or kill it
      if it doesn't normally exit within timeout seconds and return None"""
-@@ -169,7 +170,7 @@ def timeout_command(argv, timeout, *args, **kwargs):
+@@ -168,7 +169,7 @@ def timeout_command(argv, timeout, *args, **kwargs):
          while proc.poll() is None:
              time.sleep(0.1)
              now = datetime.datetime.now()
@@ -31,7 +31,7 @@
                  os.kill(proc.pid, signal.SIGKILL)
                  os.waitpid(-1, os.WNOHANG)
                  program_log.debug("%d seconds timeout" % timeout)
-@@ -183,7 +184,7 @@ def timeout_command(argv, timeout, *args, **kwargs):
+@@ -182,7 +183,7 @@ def timeout_command(argv, timeout, *args, **kwargs):
      program_log.debug("Return code: %d", proc.returncode)
      return (proc.returncode, proc.stdout.read())
  
@@ -40,7 +40,7 @@
      if env_prune is None:
          env_prune = []
  
-@@ -192,7 +193,10 @@ def _run_program(argv, root='/', stdin=None, env_prune=None, stderr_to_stdout=Fa
+@@ -191,7 +192,10 @@ def _run_program(argv, root='/', stdin=None, env_prune=None, stderr_to_stdout=Fa
              os.chroot(root)
  
      with program_log_lock:  # pylint: disable=not-context-manager
@@ -52,7 +52,7 @@
  
          env = os.environ.copy()
          env.update({"LC_ALL": "C",
-@@ -205,7 +209,7 @@ def _run_program(argv, root='/', stdin=None, env_prune=None, stderr_to_stdout=Fa
+@@ -204,7 +208,7 @@ def _run_program(argv, root='/', stdin=None, env_prune=None, stderr_to_stdout=Fa
          else:
              stderr_dir = subprocess.PIPE