Bug 451889 - Consolidate maven-resources-plugin configuration and update
version

The version should be set only once in pluginManagement section in
eclipse-platform-parent instead of everywhere maven-resources-plugin
config is changed. This reduces the chance for using different version
in different places of the build.
Update maven-resources-plugin to 2.7 version containing following fixes
http://jira.codehaus.org/secure/ReleaseNote.jspa?projectId=11145&version=18645
and most noticeably http://jira.codehaus.org/browse/MSHARED-220.

Change-Id: Ice329be193e801b1b0048321056dbb6dc2b216c8
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>