Adding the following lines to my pom to install local jar package. Ref: http://roufid.com/3-ways-to-add-local-jar-to-maven-project/

partial-pom.xml

<project> 
<build>
    <pluginManagement>

        <plugins>
            <!--This plugin's configuration is used to store Eclipse m2e settings only.
                It has no influence on the Maven build itself. -->
            <plugin>
                <groupId>org.eclipse.m2e</groupId>
                <artifactId>lifecycle-mapping</artifactId>
                <version>1.0.0</version>
                <configuration>
                    <lifecycleMappingMetadata>
                        <pluginExecutions>
                            <pluginExecution>
                                <pluginExecutionFilter>
                                    <groupId>org.codehaus.mojo</groupId>
                                    <artifactId>aspectj-maven-plugin</artifactId>
                                    <versionRange>[1.0,)</versionRange>
                                    <goals>
                                        <goal>test-compile</goal>
                                        <goal>compile</goal>
                                    </goals>
                                </pluginExecutionFilter>
                                <action>
                                    <execute />
                                </action>
                            </pluginExecution>
                            <pluginExecution>
                                <pluginExecutionFilter>
                                    <groupId>
                                        org.apache.maven.plugins
                                    </groupId>
                                    <artifactId>
                                        maven-install-plugin
                                    </artifactId>
                                    <versionRange>
                                        [2.5,)
                                    </versionRange>
                                    <goals>
                                        <goal>install-file</goal>
                                    </goals>
                                </pluginExecutionFilter>
                                <action>
                                    <execute>
                                        <runOnIncremental>false</runOnIncremental>
                                    </execute>
                                </action>
                            </pluginExecution>
                        </pluginExecutions>
                    </lifecycleMappingMetadata>
                </configuration>
            </plugin>
          
            <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-install-plugin</artifactId>
            <version>2.5</version>
            <executions>
                <execution>
                    <phase>initialize</phase>
                    <goals>
                        <goal>install-file</goal>
                    </goals>
                    <configuration>
                        <groupId>io.jenkins.plugins</groupId>
                        <artifactId>gitlab-api</artifactId>
                        <version>1.0-SNAPSHOT</version>
                        <packaging>jar</packaging>
                        <file>${basedir}/lib/gitlab-api.jar</file>
                    </configuration>
                </execution>
            </executions>
        </plugin>
        </plugins>
    </pluginManagement>
    </build>
</project>