Add more cockpit log needle variants

We're getting different log messages these days.

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

needles/cockpit/logs_entry-kernel-20210204.json

@@ -0,0 +1,15 @@
+{
+  "area": [
+    {
+      "width": 43,
+      "type": "match",
+      "height": 13,
+      "ypos": 450,
+      "xpos": 858
+    }
+  ],
+  "properties": [],
+  "tags": [
+    "cockpit_logs_entry"
+  ]
+}

needles/cockpit/logs_entry_detail-20210204.json

@@ -0,0 +1,15 @@
+{
+  "area": [
+    {
+      "height": 14,
+      "ypos": 432,
+      "xpos": 379,
+      "width": 145,
+      "type": "match"
+    }
+  ],
+  "properties": [],
+  "tags": [
+    "cockpit_logs_detail"
+  ]
+}