build-appliance-image: Update to scarthgap head revision

(From OE-Core rev: d5342ffc570d47a723b18297d75bd2f63c2088db)

Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/recipes-core/images/build-appliance-image_15.0.0.bb

@@ -26,7 +26,7 @@ inherit core-image setuptools3 features_check
 
 REQUIRED_DISTRO_FEATURES += "xattr"
 
-SRCREV ?= "0ce88bc3474d29122e6f319cf474e5c5dce55419"
+SRCREV ?= "1c462cc39e557276861323b7adcef4fedbdf75e9"
 SRC_URI = "git://git.yoctoproject.org/poky;branch=scarthgap \
            file://Yocto_Build_Appliance.vmx \
            file://Yocto_Build_Appliance.vmxf \