Add snapshot plugin repository for micrometer docs.

See: #4151.

Author: christophstrobl

spring-data-mongodb-distribution/pom.xml

@@ -100,4 +100,15 @@
 
 	</build>
 
+	<pluginRepositories>
+		<pluginRepository>
+			<id>spring-plugins-release</id>
+			<url>https://repo.spring.io/plugins-release</url>
+		</pluginRepository>
+		<pluginRepository>
+			<id>spring-plugins-snapshot</id>
+			<url>https://repo.spring.io/libs-snapshot</url>
+		</pluginRepository>
+	</pluginRepositories>
+
 </project>