[m2e-dev] refactored m2e-core-tests project layout

[Igor Fedorenko <igor@xxxxxxxxxxxxxx>]

Just fyi, recent changes to m2e-core-test project layout

Moved all "remote" test repositories under repositories/ folder

Introduced new repositories/testrepo repository to host artifacts
specifically created for m2e tests. Currently there is only one, but I
plan to eventually move all test artifacts to testrepo/ and keep
remoterepo as localcache of central. All test artifacts are built from
projects located under repositories/testrepo-src.

Introduced m2e-test-parent. Currently not used, but the plan to
eventually update all test project so we can manage dependencies from
one place.

Got rid of latest-http and latest profiles in buildAndTest/pom.xml.
Build will pull m2e-core from hudson by default, but this can be changed
with -Dm2e-core.url=<someurl> command line parameter.

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Regards,
Igor