Only include 30% of all 'textCompletion' events from 'redhat.java'.

[rgrunber]

https://github.com/redhat-developer/vscode-java/blob/8fa2464e16028b248fd89efc14622aeab251e890/src/standardLanguageClient.ts#L837

@fbricon , let me know if the logic makes sense. I'm assuming it is merged with the * configuration to restrict the textCompletion event to just 1%. (as opposed to having to write an exclusion for 99%)

• This should not be merged yet. Ideally, we can merge a few days before the redhat.java release.

[rgrunber]

Just a small change. I still think we'll only include < 1% at release time, but for pre-releases, let's restrict to 30% for now. So a few days before releasing we can do 1% of 30% (ie. 0.003).