refactor: Break core package into multiple packages under config/endpoint (#759)

* refactor: Partially break core package into dns, result and ssh packages

* refactor: Move core package to config/endpoint

* refactor: Fix warning about overlapping imported package name with endpoint variable

* refactor: Rename EndpointStatus to Status

* refactor: Merge result pkg back into endpoint pkg, because it makes more sense

* refactor: Rename parameter r to result in Condition.evaluate

* refactor: Rename parameter r to result

* refactor: Revert accidental change to endpoint.TypeDNS

* refactor: Rename parameter r to result

* refactor: Merge util package into endpoint package

* refactor: Rename parameter r to result

config/endpoint/external_endpoint_test.go

@@ -0,0 +1,25 @@
+package endpoint
+
+import (
+	"testing"
+)
+
+func TestExternalEndpoint_ToEndpoint(t *testing.T) {
+	externalEndpoint := &ExternalEndpoint{
+		Name:  "name",
+		Group: "group",
+	}
+	convertedEndpoint := externalEndpoint.ToEndpoint()
+	if externalEndpoint.Name != convertedEndpoint.Name {
+		t.Errorf("expected %s, got %s", externalEndpoint.Name, convertedEndpoint.Name)
+	}
+	if externalEndpoint.Group != convertedEndpoint.Group {
+		t.Errorf("expected %s, got %s", externalEndpoint.Group, convertedEndpoint.Group)
+	}
+	if externalEndpoint.Key() != convertedEndpoint.Key() {
+		t.Errorf("expected %s, got %s", externalEndpoint.Key(), convertedEndpoint.Key())
+	}
+	if externalEndpoint.DisplayName() != convertedEndpoint.DisplayName() {
+		t.Errorf("expected %s, got %s", externalEndpoint.DisplayName(), convertedEndpoint.DisplayName())
+	}
+}