Upgraded PHPUnit configuration file

.gitignore

@@ -1,9 +1,4 @@
 /vendor/
 /composer.lock
-/.phpunit.result.cache
 /.build/
-
-###> phpunit/phpunit ###
-/phpunit.xml
-.phpunit.result.cache
-###< phpunit/phpunit ###
+/.phpunit.cache

phpunit.xml.dist

@@ -1,15 +1,15 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd" colors="true"
-         bootstrap="vendor/autoload.php">
-    <coverage includeUncoveredFiles="true" processUncoveredFiles="true">
-        <include>
-            <directory suffix=".php">src/</directory>
-        </include>
-    </coverage>
+         xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd" bootstrap="vendor/autoload.php"
+         colors="true" cacheDirectory=".phpunit.cache">
     <testsuites>
-        <testsuite name="Deployer Systemd Test Suite">
+        <testsuite name="Deployer DotEnv Testsuite">
             <directory>tests</directory>
         </testsuite>
     </testsuites>
+    <source>
+        <include>
+            <directory suffix=".php">src/</directory>
+        </include>
+    </source>
 </phpunit>