add module nacos-config and nacos-discovery

spring-cloud-alibaba-nacos-config/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -0,0 +1,32 @@
+{
+  "properties": [
+    {
+      "name": "spring.cloud.nacos.config.server-addr",
+      "type": "java.lang.String",
+      "defaultValue": "",
+      "description": "nacos config server address."
+    },
+    {
+      "name": "spring.cloud.nacos.config.timeout",
+      "type": "java.lang.Long",
+      "defaultValue": 3000,
+      "description": "sentinel api port."
+    },
+    {
+      "name": "spring.cloud.sentinel.dashboard",
+      "type": "java.lang.String",
+      "description": "sentinel dashboard address, won't try to connect dashboard when address is empty."
+    },
+    {
+      "name": "spring.cloud.sentinel.filter.order",
+      "type": "java.lang.Integer",
+      "defaultValue": "Integer.MIN_VALUE",
+      "description": "Sentinel filter chain order, will be set to FilterRegistrationBean."
+    },
+    {
+      "name": "spring.cloud.sentinel.filter.urlPatterns",
+      "type": "java.util.List",
+      "description": "URL pattern for Sentinel filter, default contains '/*'."
+    }
+  ]
+}

spring-cloud-alibaba-nacos-config/src/main/resources/META-INF/spring.factories

@@ -0,0 +1,7 @@
+org.springframework.cloud.bootstrap.BootstrapConfiguration=\
+org.springframework.cloud.alibaba.nacos.NacosConfigBootstrapConfiguration
+org.springframework.boot.autoconfigure.EnableAutoConfiguration=\
+org.springframework.cloud.alibaba.nacos.NacosConfigAutoConfiguration,\
+org.springframework.cloud.alibaba.nacos.endpoint.NacosConfigEndpointAutoConfiguration
+org.springframework.boot.diagnostics.FailureAnalyzer=\
+org.springframework.cloud.alibaba.nacos..analyzer.NacosConnectionFailureAnalyzerdiagnostics