REGTESTS: Add missing OPENSSL to REQUIRE_OPTIONS for compression/lua_validation

The test uses the `ssl` keyword, add `OPENSSL` as a requirement.

Should be backported to all branches with that test.
diff --git a/reg-tests/compression/lua_validation.vtc b/reg-tests/compression/lua_validation.vtc
index 91a41a0..d74f2eb 100644
--- a/reg-tests/compression/lua_validation.vtc
+++ b/reg-tests/compression/lua_validation.vtc
@@ -2,7 +2,7 @@
 
 varnishtest "Compression validation"
 #REQUIRE_VERSION=1.6
-#REQUIRE_OPTIONS=ZLIB|SLZ,LUA
+#REQUIRE_OPTIONS=ZLIB|SLZ,LUA,OPENSSL
 #REGTEST_TYPE=slow
 
 feature ignore_unknown_macro