Allow = to be part of the secret value

[fooman]

Description

After this pull request is merged your secret value in .credentials can include the = character as part of its value

Fixed Issues (if relevant)

1. N/A

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/verification tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)
• Changes to Framework doesn't have backward incompatible changes for tests or have related Pull Request with fixes to tests

[magento-cicd2]

All committers have signed the CLA.

[coveralls]

Coverage decreased (-0.008%) to 57.054% when pulling 698f0a0 on fooman:patch-1 into c80e1d3 on magento:develop.

[KevinBKozan]

@fooman Thank you for your contribution! We review the contents of the PR and update as it is reviewed and processed.

[jilu1]

It looks good to me.