Reverse the logic and only on platforms newer than el7

packaging/cfengine-nova-hub/cfengine-nova-hub.spec.in

@@ -341,6 +341,11 @@ exit 0
 %prefix/share/postgresql/*
 # PostgreSQL log file
 %attr(600,cfpostgres,cfpostgres) /var/log/postgresql.log
+%if %{?rhel}%{!?rhel:0} > 7
+# Only verify owner group mode maj min symlink
+# Don't verify md5, size, mtime
+%verify(not md5 size mtime) /var/log/postgresql.log
+%endif
 
 # ENT-2708, ENT-2846
 %defattr(600,root,root,700)
@@ -399,7 +404,4 @@ exit 0
 %dir %prefix/inputs
 %dir %prefix/state
 
-# Customizing verification
-%verify(owner group mode maj min symlink) /var/log/postgresql.log
-
 %changelog