poky.conf: mark all CentOS 6/7 versions as compatible

It's rather unlikely with a distribution such as CentOS that they would introduce changes that would cause us issues that we would not be prepared to fix; therefore use a wildcard to suppress the warning (in any case, CentOS 6.6 is now the current 6.x version.)

Also add CentOS 7 as we are running regular builds on CentOS 7 machines as part of the autobuilder infrastructure.

---
 meta-yocto/conf/distro/poky.conf | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

index 71b3b14..80dc853 100644
@@ -80,7 +80,8 @@ SANITY_TESTED_DISTROS ?= " \
             Ubuntu-14.04 \n \
             Ubuntu-14.10 \n \
             Fedora-20 \n \
-            CentOS-6.5 \n \
+            CentOS-6.* \n \
+            CentOS-7.* \n \
             Debian-7.* \n \
             Debian-8.* \n \
             openSUSE-project-12.3 \n \

1.9.3

Thank you.