Improved JaCoCo configuration

Declared JaCoCo Maven plugin under dependencyManagement to avoid
conflicting versions.

Change-Id: I11f3b575d6b3b34733e8f4379b9ba6b4bf4ba39b
Issue-ID: SDC-1596
Signed-off-by: vempo <vitaliy.emporopulo@amdocs.com>
diff --git a/pom.xml b/pom.xml
index 5f4326e..694bdd3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -198,7 +198,11 @@
     <build>
         <pluginManagement>
             <plugins>
-
+                <plugin>
+                    <groupId>org.jacoco</groupId>
+                    <artifactId>jacoco-maven-plugin</artifactId>
+                    <version>0.8.1</version>
+                </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-site-plugin</artifactId>
@@ -266,7 +270,6 @@
             <plugin>
                 <groupId>org.jacoco</groupId>
                 <artifactId>jacoco-maven-plugin</artifactId>
-                <version>0.8.1</version>
                 <executions>
                     <execution>
                         <id>default-prepare-agent</id>