poky.conf: Bump version for 2.0.3 jethro release

(From meta-yocto rev: 492121940d37a72cf7cbe18472a0471fdaba29ff)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-yocto/conf/distro/poky.conf

@@ -1,6 +1,6 @@
 DISTRO = "poky"
 DISTRO_NAME = "Poky (Yocto Project Reference Distro)"
-DISTRO_VERSION = "2.0.2"
+DISTRO_VERSION = "2.0.3"
 DISTRO_CODENAME = "jethro"
 SDK_VENDOR = "-pokysdk"
 SDK_VERSION := "${@'${DISTRO_VERSION}'.replace('snapshot-${DATE}','snapshot')}"