Fix DrupalPractice.CodeAnalysis.VariableAnalysis

We are testing coding standards with PHP CodeSniffer, using the Drupal coding standards from the Coder module. We need to do a couple of steps in order to download and configure them so we can run a coding standards check.

Problem/Motivation

Complete the implementation of DrupalPractice.CodeAnalysis.VariableAnalysis. There are several excluded patterns in phpcs.xml for this sniff.

Steps to reproduce

Proposed resolution

Remaining tasks

See the child issues

User interface changes

API changes

Data model changes

Release notes snippet