Etcd router bug fixing etcd path prefix matching name (#1899)

* add logging and don't get nodes where they exist in router

* add more logging

* Fix the etcd bug for name matching of keys and prefixes matching names

registry/etcd/etcd_test.go

@@ -0,0 +1,53 @@
+package etcd
+
+import (
+	"testing"
+)
+
+// test whether the name matches
+func TestEtcdHasName(t *testing.T) {
+	testCases := []struct {
+		key    string
+		prefix string
+		name   string
+		expect bool
+	}{
+		{
+			"/micro/registry/micro/registry",
+			"/micro/registry",
+			"registry",
+			true,
+		},
+		{
+			"/micro/registry/micro/store",
+			"/micro/registry",
+			"registry",
+			false,
+		},
+		{
+			"/prefix/baz/*/registry",
+			"/prefix/baz",
+			"registry",
+			true,
+		},
+		{
+			"/prefix/baz/micro/registry",
+			"/prefix/baz",
+			"store",
+			false,
+		},
+		{
+			"/prefix/baz/micro/registry",
+			"/prefix/baz",
+			"registry",
+			true,
+		},
+	}
+
+	for _, c := range testCases {
+		v := hasName(c.key, c.prefix, c.name)
+		if v != c.expect {
+			t.Fatalf("Expected %t for %v got: %t", c.expect, c, v)
+		}
+	}
+}