[TASK] Clean and improve ConnectionManagerTest

Fixtures of ConnectionManagerTest were not yet updated
and included basic configuration that can be provided
automatically, this commit cleans the fixtures and
enables the automatic provision.

Tests/Integration/ConnectionManagerTest.php

@@ -31,12 +31,6 @@
  */
 class ConnectionManagerTest extends IntegrationTestBase
 {
-    /**
-     * @inheritdoc
-     * @todo: Remove unnecessary fixtures and remove that property as intended.
-     */
-    protected bool $skipImportRootPagesAndTemplatesForConfiguredSites = true;
-
     protected function setUp(): void
     {
         parent::setUp();

Tests/Integration/Fixtures/connection_basic.csv

@@ -18,28 +18,9 @@
 #
 "pages",
 ,"uid","pid","is_siteroot","doktype","mount_pid","mount_pid_ol","slug","title"
-,1,0,1,1,0,0,"/","First site"
 ,11,1,0,7,24,1,"/subpage","Subpage of first site"
-,111,0,1,1,0,0,"/","Second site"
 ,21,111,0,7,24,1,"/subpage","Subpage of second site"
 # detached and non Root Page-Tree
 ,3,0,0,1,0,0,"/","Detached and non Root Page-Tree"
 ,31,3,0,7,24,1,"/subpage","Subpage 1 of Detached"
-,32,3,0,7,24,1,"/subpage-2","Subpage 2 of Detached"
-"sys_template",
-,"uid","pid","root","clear","sorting","config"
-,1,1,1,3,100,"
-page = PAGE
-page.typeNum = 0
-plugin.tx_solr {
-    enabled = 1
-}"
-,111,111,1,3,100,"
-page = PAGE
-page.typeNum = 0
-
-plugin.tx_solr {
-    enabled = 1
-}"
-
-
+,32,3,0,7,24,1,"/subpage-2","Subpage 2 of Detached"