Merge branch 'pmd/new-rule-7' into 'master'

Ref: add new static analyser rule: category/java/bestpractices.xml/LooseCoupling

See merge request sheepitrenderfarm/client!320

rulesets/java-sheepit.xml

@@ -21,7 +21,7 @@
 	<rule ref="category/java/bestpractices.xml/UnusedPrivateField" />
 	<rule ref="category/java/bestpractices.xml/UnusedPrivateMethod" />
 	<rule ref="category/java/bestpractices.xml/UseCollectionIsEmpty" />
-
+	<rule ref="category/java/bestpractices.xml/LooseCoupling" />
 	<rule ref="category/java/codestyle.xml/ExtendsObject" />
 	<rule ref="category/java/codestyle.xml/ForLoopShouldBeWhileLoop" />
 	<rule ref="category/java/codestyle.xml/TooManyStaticImports" />

src/main/java/com/sheepit/client/Configuration.java

@@ -366,7 +366,7 @@ import lombok.Data;
 	 * Only logs instances where something was detected, otherwise is it will only print "FilesystemHealthCheck started"
 	 * @return an ArrayList of Strings containing all logs of the FSHealth check
 	 */
-	public ArrayList<String> filesystemHealthCheck() {
+	public List<String> filesystemHealthCheck() {
 		ArrayList<String> logs = new ArrayList<>();
 		String f = "FSHealth: ";
 		logs.add(f + "FilesystemHealthCheck started");