Update and rationalize KDE "next" needles

kgpg had its own, which doesn't make any sense. There are grey
and blue background variants that weren't consistently named.
This should rationalize things sensibly, and adds a new needle
for the new Plasma in Rawhide, with a lighter blue background.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

needles/kde/apps/kde_next-lightblue-20210929.json

@@ -2,14 +2,14 @@
   "area": [
     {
       "width": 55,
-      "xpos": 203,
-      "height": 18,
       "type": "match",
-      "ypos": 242
+      "ypos": 242,
+      "height": 18,
+      "xpos": 203
     }
   ],
   "properties": [],
   "tags": [
-    "kgpg_next"
+    "kde_next"
   ]
-}
+}

needles/kde/apps/kgpg_next_blue-noto-20210408.json

@@ -1,15 +0,0 @@
-{
-  "area": [
-    {
-      "height": 18,
-      "xpos": 203,
-      "width": 55,
-      "type": "match",
-      "ypos": 242
-    }
-  ],
-  "properties": [],
-  "tags": [
-    "kgpg_next_blue"
-  ]
-}

tests/apps_startstop/kde/kgpg.pm

@@ -11,16 +11,16 @@ sub run {
     # Start the application
     menu_launch_type 'kgpg';
     # Deal with the first wizard screen
-    assert_and_click 'kgpg_next';
+    assert_and_click 'kde_next';
     wait_still_screen 2;
     # Deal with the second wizard screen
-    assert_and_click 'kgpg_next_blue';
+    assert_and_click 'kde_next';
     wait_still_screen 2;
     # Create configuration file
     assert_and_click 'kgpg_create_config';
     wait_still_screen 2;
     # Click Next
-    assert_and_click 'kgpg_next_blue';
+    assert_and_click 'kde_next';
     wait_still_screen 2;
     # Click Finish
     assert_and_click 'kgpg_done';