[MENFORCER-466] Changed the default set of dependency exclusions to exclude provided

[jarmoniuk]

Following a regression indicated in https://issues.apache.org/jira/browse/MENFORCER-466, scope should exclude provided.

In this PR, if no other dependency exclusions are set, I'm applying the default dependency exclusions as are present in MavenRepositorySystemUtils.newSession(),

namely:

new AndDependencySelector( new ScopeDependencySelector( "test", "provided" ),
         new OptionalDependencySelector(), new ExclusionDependencySelector() );

@slawekjaranowski please review

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