REGTEST: Missing REQUIRE_VERSION declarations.

checks/s00001.vtc needs support for "srvrecord" which came with 1.8 version.
peers/s_basic_sync.vtc and s_tls_basic_sync.vtc need support for "server"
keyword usage in "peers" section which came with 2.0 version.
diff --git a/reg-tests/peers/s_basic_sync.vtc b/reg-tests/peers/s_basic_sync.vtc
index 4e35054..ecf8fd0 100644
--- a/reg-tests/peers/s_basic_sync.vtc
+++ b/reg-tests/peers/s_basic_sync.vtc
@@ -1,6 +1,8 @@
 vtest "Basic test for peers protocol"
 feature ignore_unknown_macro
 
+#REQUIRE_VERSION=2.0
+
 haproxy h1 -arg "-L A" -conf {
     defaults
         timeout client  1s