build: Add explicit execution ID for maven-jar-plugin:test-jar
build: Add explicit execution ID for maven-jar-plugin:test-jar

By default, maven-jar-plugin:test-jar is executed when building
all child projects, resulting in "test JAR" file like following:

  target/${artifactId}-${version}-tests.jar

This patch adds execution ID for maven-jar-plugin:test-jar so
that some child projects may decide to skip creation of above
mentioned "test JAR" file.

As a side note, explicit execution IDs are always better than
relying on Maven-generated (implicit) execution IDs.

Change-Id: I1f22b179436f29ca8022f33607c10af6c6f2a9ef
Signed-off-by: Vojtech Szocs <d902e99570f65d2a96ca79217eef4c9c0a62adc1@redhat.com>

zerodengxinchao/ovirt-engine,yingyun001/ovirt-engine,yapengsong/ovirt-engine,eayun/ovirt-engine,yapengsong/ovirt-engine,yingyun001/ovirt-engine,OpenUniversity/ovirt-engine,walteryang47/ovirt-engine,yingyun001/ovirt-engine,OpenUniversity/ovirt-engine,eayun/ovirt-engine,eayun/ovirt-engine,zerodengxinchao/ovirt-engine,yapengsong/ovirt-engine,yingyun001/ovirt-engine,walteryang47/ovirt-engine,yapengsong/ovirt-engine,yapengsong/ovirt-engine,walteryang47/ovirt-engine,walteryang47/ovirt-engine,eayun/ovirt-engine,OpenUniversity/ovirt-engine,OpenUniversity/ovirt-engine,zerodengxinchao/ovirt-engine,zerodengxinchao/ovirt-engine,eayun/ovirt-engine,zerodengxinchao/ovirt-engine,walteryang47/ovirt-engine,yingyun001/ovirt-engine,OpenUniversity/ovirt-engine