CodePipeline: artifact names should be restricted to 100 characters

[rix0rrr]

Right now it's very easy for the autogenerated artifact names to become humongously long:

Artifact_delivlibtesthuijbersCodeCommitPipelineGenerateTwoArtifactsActionGenerateTwoArtifacts4EDEFC2E

This is 101 characters, the limit is 100.

[rix0rrr]

I don't think these should contain the node's uniqueid. This is wayy overkill. How about:

${stage}-${action}-Artifact

?

[rix0rrr]

The rules between CodePipeline and CodeBuild seem inconsistent. CodeBuild says this:

Error calling startBuild: Invalid input: identifier must contain only alphanumeric characters and underscores and be less than 128 characters in length. (Service: AWSCodeBuild; Status Code: 400; Error Code: InvalidInputException; Request ID: 61dfcc4d-5bac-11e9-a3f2-999aa7277d39)

So CodePipeline will accept the dashes, but CodeBuild won't.