build: Allow all RH6.* distros

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/conf/local.conf.sample b/conf/local.conf.sample
index 6a91927..4f18ca1 100644
--- a/conf/local.conf.sample
+++ b/conf/local.conf.sample
@@ -115,7 +115,8 @@
 # Supported values are i686 and x86_64
 #SDKMACHINE ?= "i686"
 
-SANITY_TESTED_DISTROS_append ?= " RedHatEnterpriseWorkstation-6.6"
+SANITY_TESTED_DISTROS_append ?= " RedHatEnterpriseWorkstation-6.*"
+"
 #
 # Extra image configuration defaults
 #