docs: Change CentOS version from 6.x to 6
-rw-r--r-- 9995 ChangeLog
-rw-r--r-- 770 README
-rw-r--r-- 103 devflow.conf
drwxr-xr-x - docs
drwxr-xr-x - snf-image-helper
drwxr-xr-x - snf-image-host
-rw-r--r-- 9 version
-rw-r--r-- 41 version.m4
-rw-r--r-- 52 version_template