add unit test for getting sources from m2 repository

Files:
added: /ant/ivy/core/trunk/test/repositories/m2/org/apache/test-sources (try)
added: /ant/ivy/core/trunk/test/repositories/m2/org/apache/test-sources/1.0/test-sources-1.0.pom (try)
added: /ant/ivy/core/trunk/test/repositories/m2/org/apache/test-sources/1.0/test-sources-1.0.jar (try)
added: /ant/ivy/core/trunk/test/java/org/apache/ivy/core/resolve/ivy-m2-with-sources.xml (try)
added: /ant/ivy/core/trunk/test/repositories/m2/org/apache/test-sources/1.0/test-sources-1.0-sources.jar (try)
modified: /ant/ivy/core/trunk/test/java/org/apache/ivy/core/resolve/ResolveTest.java (try)
added: /ant/ivy/core/trunk/test/repositories/m2/org/apache/test-sources/1.0 (try)