feat(registry/polaris): add registry for Tencent Polaris (#1816)

* feat(registry): add polaris registry

.github/workflows/go.yml

@@ -32,6 +32,11 @@ jobs:
         ports:
           - "8848:8848"
           - "9848:9848"
+      polaris:
+        image: huyuanxin/polaris-server-with-config:latest
+        ports:
+          - 8090:8090
+          - 8091:8091
     steps:
       - uses: actions/checkout@v2
       - name: Set up Go

contrib/registry/polaris/go.mod

@@ -0,0 +1,32 @@
+module github.com/go-kratos/kratos/contrib/registry/polaris/v2
+
+go 1.17
+
+require (
+	github.com/go-kratos/kratos/v2 v2.1.5
+	github.com/polarismesh/polaris-go v1.0.1
+)
+
+require (
+	github.com/ghodss/yaml v1.0.0 // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/google/uuid v1.3.0 // indirect
+	github.com/hashicorp/errwrap v1.0.0 // indirect
+	github.com/hashicorp/go-multierror v1.1.1 // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/natefinch/lumberjack v2.0.0+incompatible // indirect
+	github.com/spaolacci/murmur3 v1.1.0 // indirect
+	go.uber.org/atomic v1.7.0 // indirect
+	go.uber.org/multierr v1.6.0 // indirect
+	go.uber.org/zap v1.19.1 // indirect
+	golang.org/x/net v0.0.0-20210917221730-978cfadd31cf // indirect
+	golang.org/x/sys v0.0.0-20210816074244-15123e1e1f71 // indirect
+	golang.org/x/text v0.3.6 // indirect
+	google.golang.org/genproto v0.0.0-20220126215142-9970aeb2e350 // indirect
+	google.golang.org/grpc v1.44.0 // indirect
+	google.golang.org/protobuf v1.27.1 // indirect
+	gopkg.in/yaml.v2 v2.3.0 // indirect
+)
+
+replace github.com/go-kratos/kratos/v2 => ../../../