[MNG-5513] Artifact filtering for Eclipse Aether fixed

The filtering was left unchanged, while Aether
GroupID changed from org.sonatype.aether to
org.eclipse.aether, basically letting
Plugins to reference Eclipse Aether that
would produce runtime Linkage errors.
[MNG-5513] Restoring Maven 3.0.x style behavior

As it was importing org.sonatype.aether.impl and
sub packages, but since Aether move to Eclipse
the org.eclipse.aether.internal.impl is no longer
sub package of org.eclipse.aether.impl (but it
was in Sonatype Aether)
use project.scm.tag property in web access to avoid value change when
releasing or branching
fix scm connection and developerConnection values in modules, waiting
for maven-scm support of default inherited values, which appends
/${artifactId}
fix scm connection and developerConnection values in modules, waiting
for maven-scm support of default inherited values, which appends
/${artifactId}
Change poms over to major.minor-SNAPSHOT
Merge branch 'mng-5513'
We must also filter out the old Aether as well to prevent NoClassDefFoundErrors