poky.conf: Bump version for 2.6 thud release

(From meta-yocto rev: b5aa0db24dae27e4e66773767ea72f0e3c7c57de)

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 = "2.5+snapshot-${DATE}"
-DISTRO_CODENAME = "master"
+DISTRO_VERSION = "2.6"
+DISTRO_CODENAME = "thud"
 SDK_VENDOR = "-pokysdk"
 SDK_VERSION := "${@'${DISTRO_VERSION}'.replace('snapshot-${DATE}','snapshot')}"
 
@@ -64,9 +64,8 @@ https://.*/.*    http://downloads.yoctoproject.org/mirror/sources/ \n"
 CONNECTIVITY_CHECK_URIS ?= "https://www.example.com/"
 
 SANITY_TESTED_DISTROS ?= " \
-            poky-2.4 \n \
             poky-2.5 \n \
-            ubuntu-15.04 \n \
+            poky-2.6 \n \
             ubuntu-16.04 \n \
             ubuntu-16.10 \n \
             ubuntu-17.04 \n \