make sure modules using java8

spring-cloud/pom.xml

@@ -43,7 +43,7 @@
         <spring-cloud-starter-hystrix.version>1.2.3.RELEASE</spring-cloud-starter-hystrix.version>
         <spring-cloud-stream.version>1.3.0.RELEASE</spring-cloud-stream.version>
         <spring-boot-starter-web.version>1.4.2.RELEASE</spring-boot-starter-web.version>
-        <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
+        <maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
         <spring-boot-maven-plugin.version>1.4.2.RELEASE</spring-boot-maven-plugin.version>
     </properties>
 

spring-cloud/spring-cloud-connectors-heroku/pom.xml

@@ -88,7 +88,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.6.0</version>
+                <version>3.7.0</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>

spring-cloud/spring-cloud-consul/pom.xml

@@ -18,7 +18,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
+        <maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
     </properties>
 
     <dependencies>

spring-cloud/spring-cloud-eureka/pom.xml

@@ -26,7 +26,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
+        <maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
         <spring-boot-maven-plugin.version>1.4.2.RELEASE</spring-boot-maven-plugin.version>
     </properties>
 

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-client/pom.xml

@@ -48,6 +48,11 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.7.0</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>                
             </plugin>
             <plugin>
                 <groupId>org.springframework.boot</groupId>

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-feign-client/pom.xml

@@ -58,6 +58,11 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.7.0</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>                
             </plugin>
             <plugin>
                 <groupId>org.springframework.boot</groupId>

spring-cloud/spring-cloud-eureka/spring-cloud-eureka-server/pom.xml

@@ -43,6 +43,11 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.7.0</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>                
             </plugin>
             <plugin>
                 <groupId>org.springframework.boot</groupId>

spring-cloud/spring-cloud-gateway/pom.xml

@@ -23,7 +23,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
+        <maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
         <spring-boot-maven-plugin.version>1.4.2.RELEASE</spring-boot-maven-plugin.version>
     </properties>
 

spring-cloud/spring-cloud-hystrix/feign-rest-consumer/pom.xml

@@ -72,6 +72,11 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.7.0</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
             </plugin>
             <plugin>
                 <groupId>org.springframework.boot</groupId>

spring-cloud/spring-cloud-hystrix/pom.xml

@@ -25,7 +25,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
+        <maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
         <spring-boot-maven-plugin.version>1.4.2.RELEASE</spring-boot-maven-plugin.version>
     </properties>
 

spring-cloud/spring-cloud-hystrix/rest-consumer/pom.xml

@@ -62,6 +62,11 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.7.0</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
             </plugin>
             <plugin>
                 <groupId>org.springframework.boot</groupId>

spring-cloud/spring-cloud-hystrix/rest-producer/pom.xml

@@ -30,6 +30,11 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.7.0</version>
+                <configuration>
+                    <source>1.8</source>
+                    <target>1.8</target>
+                </configuration>
             </plugin>
             <plugin>
                 <groupId>org.springframework.boot</groupId>

spring-cloud/spring-cloud-rest/pom.xml

@@ -25,7 +25,7 @@
       
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
+        <maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
         <spring-boot-maven-plugin.version>1.4.2.RELEASE</spring-boot-maven-plugin.version>
     </properties>
 

spring-cloud/spring-cloud-stream/pom.xml

@@ -22,7 +22,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven-compiler-plugin.version>3.6.0</maven-compiler-plugin.version>
+        <maven-compiler-plugin.version>3.7.0</maven-compiler-plugin.version>
     </properties>
 
     <dependencyManagement>