[partition] Reduce warnings from KPMCore

- make KPMHelper.h an "everything include" and suppress warnings
  from it, then use it in the tests.

src/libcalamares/partition/KPMHelper.h

@@ -24,9 +24,16 @@
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wdocumentation"
 #pragma clang diagnostic ignored "-Wsuggest-destructor-override"
+#pragma clang diagnostic ignored "-Winconsistent-missing-destructor-override"
 #endif
 
 #include <backend/corebackend.h>
+#include <core/device.h>
+#include <core/lvmdevice.h>
+#include <core/partition.h>
+#include <core/partitionrole.h>
+#include <core/partitiontable.h>
+#include <fs/filesystem.h>
 #include <fs/filesystemfactory.h>
 
 #ifdef __clang__

src/modules/partition/tests/CreateLayoutsTests.cpp

@@ -15,10 +15,6 @@
 #include "partition/KPMManager.h"
 #include "utils/Logger.h"
 
-#include <core/lvmdevice.h>
-#include <core/partition.h>
-#include <fs/filesystemfactory.h>
-
 #include <memory>
 
 #include <QtTest/QtTest>

src/modules/partition/tests/CreateLayoutsTests.h

@@ -10,8 +10,9 @@
 #ifndef CLEARMOUNTSJOBTESTS_H
 #define CLEARMOUNTSJOBTESTS_H
 
+#include "partition/KPMHelper.h"
+
 #include <QObject>
-#include <core/device.h>
 
 class CreateLayoutsTests : public QObject
 {

src/modules/partition/tests/PartitionJobTests.h

@@ -12,12 +12,7 @@
 
 #include "JobQueue.h"
 
-// CalaPM
-#include <core/device.h>
-#include <core/partition.h>
-#include <core/partitionrole.h>
-#include <core/partitiontable.h>
-#include <fs/filesystem.h>
+#include "partition/KPMHelper.h"
 
 // Qt
 #include <QObject>