YAML Validator does not support the !include tag

Issue Summary

Bamboo YAML Validator does not support the !include tag in YAML files.

Steps to Reproduce

• Create a YAML Specs Repository
• Go to Specs >> YAML Validation and add any code that contains the tag !include

Expected Results

The YAML Validation should validate YAML files even if they have !include tags in it.

Actual Results

A pop-up message appears in the UI with the message:

The YAML configuration is invalid

There's something wrong with the YAML configuration. Fix the errors and try again.
Invalid format of the YAML file: Can't construct a java object for !include; exception=Invalid tag: !include in 'reader', line 2, column 1: !include 'repositories/... ^

Workaround

There's no workaround at the moment. One will be added here when available.