Redundant Solr settings in settings.php

[tobybellwood]

The solr settings hard-configured in settings.php have no server machine name specified, so will not apply (thankfully, as the path is also outdated).
https://github.com/govCMS/govcms8lagoon/blob/develop/.docker/images/govcms8/settings/settings.php#L150-L154

The host setting should probably be added to the second code block though (and set to the default lagoon_solr machine name)
https://github.com/govCMS/govcms8lagoon/blob/develop/.docker/images/govcms8/settings/settings.php#L274-L277

[simesy]

Reminder to mirror any changes in the second code block here.