[Investigate] Empty completions when triggered on "azureml:"

[sevillal]

Expected Behavior

Show list of completions for the given property

Actual Behavior

No completions shown

Steps to Reproduce the Problem

1. Open a yaml file to create a resource (i.e. commandJob)
2. On environment property trigger completions after "environment: azureml:"

[tbombach]

We think this may be because the format of the string is the same as a JSON/YAML property. We need to investigate whether or not we can provide completions correctly in this case.

[shsuman]

Closing this as the behavior is limited by the syntactic features of Yaml language.