sls package failing while using proxy

[aidas-truskauskas]

For accessing AWS resources, we are using proxy:

export HTTPS_PROXY="https://**********.com:8081"
export HTTP_PROXY="http://**********:8081"

Looks like the plugin does not take these Environment Variables into account since I get this error while doing sls package:

Error:
Cannot resolve serverless.yml: Variables resolution errored with:
  - Cannot resolve variable at "Glue.jobs.0.role": unable to get local issuer certificate,
  - Cannot resolve variable at "Glue.jobs.1.role": unable to get local issuer certificate,
  - Cannot resolve variable at "Glue.jobs.2.role": unable to get local issuer certificate

Once I comment out the serverless-glue parts, the sls package works successfully.
sls package also works fine when HTTPS_PROXY and HTTP_PROXY are not used