build-appliance-image: Update to master head revision

(From OE-Core rev: 03d37854b1dacbecd2c522821c59ef01d9bd305c)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

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 ?= "27414b27d4818efa77e98d5f62549087b9ed1210"
+SRCREV ?= "71faadedb96a15a0748552b00dec032649adb71f"
 SRC_URI = "git://git.yoctoproject.org/poky;branch=master \
            file://Yocto_Build_Appliance.vmx \
            file://Yocto_Build_Appliance.vmxf \