fix:maven-compiler-plugin version and module declaration for zuul-gateway

Author: TrevorLink

mse-simple-demo/pom.xml

@@ -23,6 +23,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.1</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>

pom.xml

@@ -19,6 +19,7 @@
         <module>src/recomendationservice</module>
         <module>src/shippingservice</module>
         <module>src/exception-mock</module>
+        <module>src/zuul-gateway</module>
     </modules>
 
     <packaging>pom</packaging>
@@ -29,6 +30,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.8.1</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>