MQE-899: Excessive double quotes are being generated in WaitForElementChange method arguments

[KevinBKozan]

Description

• Fixed quote issue in waitForElementChanged. Also included fix for performOn, as it's the only other codeception function that takes a closure as an argument.

Fixed Issues (if relevant)

1. magento/magento2-functional-testing-framework#<899>: Excessive double quotes are being generated in WaitForElementChange method arguments
2. Excessive double quotes are being generated in WaitForElementChange method arguments #68

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

[coveralls]

Coverage increased (+0.07%) to 50.36% when pulling f81ab93 on MQE-899 into ebbe2d1 on develop.

[coveralls]

Coverage increased (+0.07%) to 50.36% when pulling f81ab93 on MQE-899 into ebbe2d1 on develop.

[coveralls]

Coverage decreased (-0.4%) to 50.36% when pulling 518f896 on MQE-899 into 298bbca on develop.