release/dist/unixpkgs: include tailscale-online.target in packages

The tailscale-online.target and tailscale-wait-online.service systemd
units were added in 30e12310f1 but never included in the release
packaging (tarballs, debs, rpms).

Updates #11504

Change-Id: I93e03e1330a7ff8facf845c7ca062ed2f0d35eaa
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>

release/dist/unixpkgs/pkgs.go

@@ -140,6 +140,12 @@ func (t *tgzTarget) Build(b *dist.Build) ([]string, error) {
 		if err := addFile(filepath.Join(tailscaledDir, "tailscaled.defaults"), filepath.Join(dir, "tailscaled.defaults"), 0644); err != nil {
 			return nil, err
 		}
+		if err := addFile(filepath.Join(tailscaledDir, "tailscale-online.target"), filepath.Join(dir, "tailscale-online.target"), 0644); err != nil {
+			return nil, err
+		}
+		if err := addFile(filepath.Join(tailscaledDir, "tailscale-wait-online.service"), filepath.Join(dir, "tailscale-wait-online.service"), 0644); err != nil {
+			return nil, err
+		}
 	}
 	if err := tw.Close(); err != nil {
 		return nil, err
@@ -223,6 +229,16 @@ func (t *debTarget) Build(b *dist.Build) ([]string, error) {
 			Source:      filepath.Join(tailscaledDir, "tailscaled.service"),
 			Destination: "/lib/systemd/system/tailscaled.service",
 		},
+		&files.Content{
+			Type:        files.TypeFile,
+			Source:      filepath.Join(tailscaledDir, "tailscale-online.target"),
+			Destination: "/lib/systemd/system/tailscale-online.target",
+		},
+		&files.Content{
+			Type:        files.TypeFile,
+			Source:      filepath.Join(tailscaledDir, "tailscale-wait-online.service"),
+			Destination: "/lib/systemd/system/tailscale-wait-online.service",
+		},
 		&files.Content{
 			Type:        files.TypeConfigNoReplace,
 			Source:      filepath.Join(tailscaledDir, "tailscaled.defaults"),
@@ -360,6 +376,16 @@ func (t *rpmTarget) Build(b *dist.Build) ([]string, error) {
 			Source:      filepath.Join(tailscaledDir, "tailscaled.service"),
 			Destination: "/lib/systemd/system/tailscaled.service",
 		},
+		&files.Content{
+			Type:        files.TypeFile,
+			Source:      filepath.Join(tailscaledDir, "tailscale-online.target"),
+			Destination: "/lib/systemd/system/tailscale-online.target",
+		},
+		&files.Content{
+			Type:        files.TypeFile,
+			Source:      filepath.Join(tailscaledDir, "tailscale-wait-online.service"),
+			Destination: "/lib/systemd/system/tailscale-wait-online.service",
+		},
 		&files.Content{
 			Type:        files.TypeConfigNoReplace,
 			Source:      filepath.Join(tailscaledDir, "tailscaled.defaults"),