Improve implementation around config (#1122)

* refactor config

* fix saas config

* feat(config): scanmodule for each server in config.toml

* feat(config): enable to specify containersOnly in config.toml

* add new keys of config.toml to discover.go

* fix summary output, logging

models/scanresults_test.go

@@ -392,8 +392,7 @@ func TestFilterUnfixed(t *testing.T) {
 		},
 	}
 	for i, tt := range tests {
-		config.Conf.IgnoreUnfixed = true
-		actual := tt.in.FilterUnfixed()
+		actual := tt.in.FilterUnfixed(true)
 		if !reflect.DeepEqual(tt.out.ScannedCves, actual.ScannedCves) {
 			o := pp.Sprintf("%v", tt.out.ScannedCves)
 			a := pp.Sprintf("%v", actual.ScannedCves)