Feature: Added session_api to drupal-org.make & .info file

## Ready State: Yes

This pull request is related to the following JIRA tickets: https://imagex.atlassian.net/browse/LDC-147

## Requirements & Dependencies

None

## Deployment Instructions

None

## Usage/Test Instructions

Run the installer process using https://github.com/amcgowanca/linux.com/wiki replacing the second line with:
```
git clone git@github.com:thomjjames/imagex_installkit.git -b feature/flag_dependency $DIR/profiles/imagex_installkit && \
```

Then ensure:
- The session_api module (version 7.x-1.0-rc1) is downloaded to profiles/imagex_installkit/modules/contrib
- The session_api module is enabled during installation with the imagex_installkit profile