[Conf] Add missing groups for whitelist module symbols

Issue: #4169

conf/scores.d/whitelist_group.conf

     "WHITELIST_SPF" {
         weight = -1.0;
         description = "Mail comes from the whitelisted domain and has a valid SPF policy";
+        groups = ["spf"];
     }
     "BLACKLIST_SPF" {
         weight = 1.0;
         description = "Mail comes from the whitelisted domain and has no valid SPF policy";
+        groups = ["spf"];
     }
     "WHITELIST_DKIM" {
         weight = -1.0;
         description = "Mail comes from the whitelisted domain and has a valid DKIM signature";
+        groups = ["dkim"];
     }
     "BLACKLIST_DKIM" {
         weight = 2.0;
         description = "Mail comes from the whitelisted domain and has non-valid DKIM signature";
+        groups = ["dkim"];
     }
     "WHITELIST_SPF_DKIM" {
         weight = -3.0;
         description = "Mail comes from the whitelisted domain and has valid SPF and DKIM policies";
+        groups = ["spf", "dkim"];
     }
     "BLACKLIST_SPF_DKIM" {
         weight = 3.0;
         description = "Mail comes from the whitelisted domain and has no valid SPF policy or a bad DKIM signature";
+        groups = ["spf", "dkim"];
     }
     "WHITELIST_DMARC" {
         weight = -7.0;
         description = "Mail comes from the whitelisted domain and has valid DMARC and DKIM policies";
+        groups = ["dmarc", "spf", "dkim"];
     }
     "BLACKLIST_DMARC" {
         weight = 6.0;
         description = "Mail comes from the whitelisted domain and has failed DMARC and DKIM policies";
+        groups = ["dmarc", "spf", "dkim"];
     }
 }