Support a blocklisting of excluded artifact versions

[spyrkob]

Support a blocklisting of excluded artifact versions

[jmesnil]

I'm not convinced by this RFE.

A channel is a curated list of components.
A blocklist is another way to curate by saying I want everything except this and that versions. So now, you are no longer curating the channel but the blocklist :)

I can see reasons to excludes some components but I'm not sure that adding a new separate artifact for this is the way to go.

• First, using fixed version bypasses this whole issue (with more effort to curate the channel).
• Second, using regexp might allow to remove some version (but the resulting regular expression might be quite complex)

If we see a need to curate the channel by dropping some versions, I'd prefer we incorporate that into the channel itself with something like:

streams:
  - groupId: org.example
     artifactId: foo
     versionPattern: "2\..*\.Final"
     excludes:
       - 2.2.17.Final
       - 2.2.18.Final

wdyt?

[spyrkob]

The idea was to allow the channel.yaml of an open channels to be a stateless, static file. The blocklist would become a part of the channel itself like any other artifact.

@wolfc - you had some reservations about the excludes being part of a stream definition

[spyrkob]

Fixed by #109