SONAR-1793: Fix wrong URL construction in ViolationQuery, when depth parameter used

sonar-ws-client/src/main/java/org/sonar/wsclient/services/ViolationQuery.java

@@ -96,7 +96,7 @@ public class ViolationQuery extends Query<Violation> {
         .append("&");
 
     if (depth != 0) {
-      url.append("depth").append(depth).append("&");
+      url.append("depth=").append(depth).append("&");
     }
     append(url, "scopes", scopes);
     append(url, "qualifiers", qualifiers);

sonar-ws-client/src/test/java/org/sonar/wsclient/services/ViolationQueryTest.java

@@ -41,6 +41,6 @@ public class ViolationQueryTest {
         .setPriorities("MAJOR", "BLOCKER")
         .setQualifiers("FIL")
         .setRuleKeys("checkstyle:foo", "pmd:bar");
-    assertThat(query.getUrl(), is("/api/violations?resource=myproject&depth-1&qualifiers=FIL&rules=checkstyle:foo,pmd:bar&priorities=MAJOR,BLOCKER&"));
+    assertThat(query.getUrl(), is("/api/violations?resource=myproject&depth=-1&qualifiers=FIL&rules=checkstyle:foo,pmd:bar&priorities=MAJOR,BLOCKER&"));
   }
 }