p2p: support private peer IDs in new p2p stack (#6409)

Pass a set of private peer ids to the `PeerManager` and any node that exists in this set is not returned in the `Advertise` method.

closes: #6405

node/node_test.go

@@ -77,25 +77,6 @@ func TestNodeStartStop(t *testing.T) {
 	}
 }
 
-func TestSplitAndTrimEmpty(t *testing.T) {
-	testCases := []struct {
-		s        string
-		sep      string
-		cutset   string
-		expected []string
-	}{
-		{"a,b,c", ",", " ", []string{"a", "b", "c"}},
-		{" a , b , c ", ",", " ", []string{"a", "b", "c"}},
-		{" a, b, c ", ",", " ", []string{"a", "b", "c"}},
-		{" a, ", ",", " ", []string{"a"}},
-		{"   ", ",", " ", []string{}},
-	}
-
-	for _, tc := range testCases {
-		assert.Equal(t, tc.expected, splitAndTrimEmpty(tc.s, tc.sep, tc.cutset), "%s", tc.s)
-	}
-}
-
 func TestNodeDelayedStart(t *testing.T) {
 	config := cfg.ResetTestRoot("node_delayed_start_test")
 	defer os.RemoveAll(config.RootDir)