build: remove usage of local repository

[WARNING] Some problems were encountered while building the effective
model for org.ovirt.engine:engine-server-ear:ear:3.4.0-SNAPSHOT
[WARNING] 'distributionManagement.repository.id' must not be 'local',
this identifier is reserved for the local repository, using it for other
repositories will corrupt your repository metadata. @ line 18, column 11

Change-Id: Ief5a43d2409c257728c0c0479ee77c2d7536d3e4
Signed-off-by: Alon Bar-Lev <alonbl@redhat.com>