REGTESTS: server/cli_set_fqdn requires version 1.8 minimum

This test uses "set server <srv> fqdn" which is not available in 1.7.
All reg-tests now pass on 1.7.
diff --git a/reg-tests/server/cli_set_fdqn.vtc b/reg-tests/server/cli_set_fdqn.vtc
index cf6b809..b3b00c3 100644
--- a/reg-tests/server/cli_set_fdqn.vtc
+++ b/reg-tests/server/cli_set_fdqn.vtc
@@ -2,6 +2,8 @@
 
 feature ignore_unknown_macro
 
+# for "set server <srv> fqdn"
+#REQUIRE_VERSION=1.8
 #REGTEST_TYPE=bug
 
 # Do nothing. Is there only to create s1_* macros