Move plugin versions and extentions into parent pom

Author: vsbogd

example/pom.xml

@@ -71,7 +71,6 @@
       <plugin>
         <groupId>io.singularitynet</groupId>
         <artifactId>snet-sdk-maven-plugin</artifactId>
-        <version>${project.version}</version>
         <executions>
           <execution>
             <id>example-service</id>
@@ -103,7 +102,6 @@
       <plugin>
         <groupId>org.xolstice.maven.plugins</groupId>
         <artifactId>protobuf-maven-plugin</artifactId>
-        <version>0.6.1</version>
         <configuration>
           <!-- artifact to download binary protobuf compiler -->
           <protocArtifact>com.google.protobuf:protoc:${protobuf.version}:exe:${os.detected.classifier}</protocArtifact>
@@ -129,7 +127,6 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>exec-maven-plugin</artifactId>
-        <version>1.4.0</version>
       </plugin>
 
     </plugins>

maven-plugin/pom.xml

@@ -103,7 +103,6 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-plugin-plugin</artifactId>
-        <version>3.6.0</version>
         <configuration>
           <!-- <goalPrefix>maven-archetype-plugin</goalPrefix> -->
           <skipErrorNoDescriptorsFound>true</skipErrorNoDescriptorsFound>

pom.xml

@@ -30,6 +30,7 @@
 
   <dependencyManagement>
     <dependencies>
+
       <!-- compile scope -->
       <dependency>
         <groupId>io.singularitynet</groupId>
@@ -143,8 +144,47 @@
   </dependencyManagement>
 
   <build>
+    <extensions>
+      <extension>
+        <groupId>kr.motd.maven</groupId>
+        <artifactId>os-maven-plugin</artifactId>
+        <version>1.6.2</version>
+      </extension>
+    </extensions>
+
     <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
       <plugins>
+        <plugin>
+          <groupId>io.singularitynet</groupId>
+          <artifactId>snet-sdk-maven-plugin</artifactId>
+          <version>${project.version}</version>
+        </plugin>
+        <plugin>
+          <groupId>org.xolstice.maven.plugins</groupId>
+          <artifactId>protobuf-maven-plugin</artifactId>
+          <version>0.6.1</version>
+        </plugin>
+        <plugin>
+          <groupId>org.codehaus.mojo</groupId>
+          <artifactId>build-helper-maven-plugin</artifactId>
+          <version>3.0.0</version>
+        </plugin>
+        <plugin>
+          <groupId>org.jacoco</groupId>
+          <artifactId>jacoco-maven-plugin</artifactId>
+          <version>0.8.2</version>
+        </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-javadoc-plugin</artifactId>
+          <version>3.1.1</version>
+        </plugin>
+        <plugin>
+          <groupId>org.codehaus.mojo</groupId>
+          <artifactId>exec-maven-plugin</artifactId>
+          <version>1.4.0</version>
+        </plugin>
+        <!-- generated by maven -->
         <plugin>
           <artifactId>maven-clean-plugin</artifactId>
           <version>3.1.0</version>
@@ -185,6 +225,7 @@
           <artifactId>maven-deploy-plugin</artifactId>
           <version>2.8.2</version>
         </plugin>
+        <!-- generated by maven end -->
       </plugins>
     </pluginManagement>
   </build>

sdk/pom.xml

@@ -97,14 +97,6 @@
 
   <build>
 
-    <extensions>
-      <extension>
-        <groupId>kr.motd.maven</groupId>
-        <artifactId>os-maven-plugin</artifactId>
-        <version>1.6.2</version>
-      </extension>
-    </extensions>
-
     <resources>
       <resource>
         <!-- resources unpacked from dependencies -->
@@ -116,7 +108,6 @@
       <plugin>
         <groupId>org.xolstice.maven.plugins</groupId>
         <artifactId>protobuf-maven-plugin</artifactId>
-        <version>0.6.1</version>
         <configuration>
           <!-- artifact to download binary protobuf compiler -->
           <protocArtifact>com.google.protobuf:protoc:${protobuf.version}:exe:${os.detected.classifier}</protocArtifact>
@@ -146,7 +137,6 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>build-helper-maven-plugin</artifactId>
-        <version>3.0.0</version>
         <executions>
           <execution>
             <id>add-source</id>
@@ -166,7 +156,6 @@
       <plugin>
         <groupId>org.jacoco</groupId>
         <artifactId>jacoco-maven-plugin</artifactId>
-        <version>0.8.2</version>
         <executions>
           <execution>
             <goals>
@@ -187,7 +176,6 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-javadoc-plugin</artifactId>
-        <version>3.1.1</version>
       </plugin>
 
     </plugins>