dx-core dependency management imports dependencies of cloudfoundry bundle (<scope>import</scope>, which overrides some 3rd party dependencies defined in BOM.

Since we don't need need any 3rd party dependencies defined by cloudfoundry and we're not using bundling it anyway, we can delete it from dependency management.

Consequence of this change:

aopalliance:aopalliance:1.0 → removed
commons-collections:commons-collections:jar:3.2.1 → 3.2.2
commons-pool:commons-pool:jar:1.4 → 1.5.4
commons-lang:commons-lang:jar:2.4 → 2.1