reset upstream subtrees to HEAD

Reset the following subtrees on HEAD:
  poky: 8217b477a1(master)
  meta-xilinx: 64aa3d35ae(master)
  meta-openembedded: 0435c9e193(master)
  meta-raspberrypi: 490a4441ac(master)
  meta-security: cb6d1c85ee(master)

Squashed patches:
  meta-phosphor: drop systemd 239 patches
  meta-phosphor: mrw-api: use correct install path

Change-Id: I268e2646d9174ad305630c6bbd3fbc1a6105f43d
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/poky/meta/recipes-core/images/build-appliance-image_15.0.0.bb b/poky/meta/recipes-core/images/build-appliance-image_15.0.0.bb
index d9d6c1e..a59334f 100644
--- a/poky/meta/recipes-core/images/build-appliance-image_15.0.0.bb
+++ b/poky/meta/recipes-core/images/build-appliance-image_15.0.0.bb
@@ -22,13 +22,14 @@
 
 inherit core-image module-base setuptools3
 
-SRCREV ?= "9dfebdaf7af11b69006996f3253e435bce0dfbfb"
-SRC_URI = "git://git.yoctoproject.org/poky;branch=thud \
+SRCREV ?= "c96d8de352f242f70ff9c166508c3d0e50199874"
+SRC_URI = "git://git.yoctoproject.org/poky \
            file://Yocto_Build_Appliance.vmx \
            file://Yocto_Build_Appliance.vmxf \
            file://README_VirtualBox_Guest_Additions.txt \
            file://README_VirtualBox_Toaster.txt \
           "
+RECIPE_NO_UPDATE_REASON = "Recipe is recursive and handled as part of the release process"
 BA_INCLUDE_SOURCES ??= "0"
 
 IMAGE_CMD_ext4_append () {