Replaced failed scald images from Drupal migration.

[rhetoric101]

This is the second of two PRs related to missing scald images from the Drupal migration. The other PR is for distributed tracing (four images) and is here: #1452

Closes #1465.

Tell us why

A number of scald images were not successfully converted in the migration from Drupal.

Anything else you'd like to share?

Please check out the following topics to make sure you see images in them. Only one has multiple screenshots:

• /docs/agents/manage-apm-agents/troubleshooting/get-environment-data-about-your-apm-app
• /docs/agents/php-agent/troubleshooting/checking-loaded-configuration-files-directory
• /docs/agents/net-agent/troubleshooting/azure-pipelines-wipes-out-newrelicazurewebsitesextension-directories
• /docs/agents/php-agent/troubleshooting/missing-php-module
• /docs/agents/php-agent/troubleshooting/using-phpinfo-verify-php
• /docs/integrations/amazon-integrations/troubleshooting/authentication-issues (two images)
• /docs/integrations/infrastructure-integrations/cloud-integrations/metric-data-gaps-cloud-integrations