poky.conf: Bump version/codename for post release of scarthgap

(From meta-yocto rev: 99f48efdf733e6722045c944ffef8117ca80116f)

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

meta-poky/conf/distro/poky.conf

@@ -1,7 +1,7 @@
 DISTRO = "poky"
 DISTRO_NAME = "Poky (Yocto Project Reference Distro)"
-DISTRO_VERSION = "5.0"
-DISTRO_CODENAME = "scarthgap"
+DISTRO_VERSION = "5.0+snapshot-${METADATA_REVISION}"
+DISTRO_CODENAME = "styhead"
 SDK_VENDOR = "-pokysdk"
 SDK_VERSION = "${@d.getVar('DISTRO_VERSION').replace('snapshot-${METADATA_REVISION}', 'snapshot')}"
 SDK_VERSION[vardepvalue] = "${SDK_VERSION}"