• Used IACP group instead of TFE to upload state

Improved debugging

Fixed the workspace creation backed by Azure DevOps and Bitbucket.

#5 Fixed issue with creating non-sensitive backend secrets

Added support to skip:

• workspaces creation - if they already exist in Scalr, but the state is not migrated yet
• backend secrets creation - if you don't want to create SCALR_ and TFC_ shell variables from the provider backend hostnames and tokens.