split '/diagnosis/ignore' and '/diagnosis/ungignore'

data/actionsmap/yunohost.yml

@@ -1795,17 +1795,21 @@ diagnosis:
 
         ignore:
             action_help: Configure some diagnosis results to be ignored and therefore not considered as actual issues
-            api: POST /diagnosis/ignore
+            api: PUT /diagnosis/ignore
             arguments:
-                --add-filter:
+                --filter:
                     help: "Add a filter. The first element should be a diagnosis category, and other criterias can be provided using the infos from the 'meta' sections in 'yunohost diagnosis show'. For example: 'dnsrecords domain=yolo.test category=xmpp'"
                     nargs: "*"
                     metavar: CRITERIA
-                --remove-filter:
-                    help: Remove a filter (it should be an existing filter as listed with --list)
-                    nargs: "*"
-                    metavar: CRITERIA
                 --list:
                     help: List active ignore filters
                     action: store_true
 
+        unignore:
+            action_help: Configure some diagnosis results to be unignored and therefore considered as actual issues
+            api: PUT /diagnosis/unignore
+            arguments:
+                --filter:
+                    help: Remove a filter (it should be an existing filter as listed with --list)
+                    nargs: "*"
+                    metavar: CRITERIA

src/yunohost/diagnosis.py

@@ -221,7 +221,15 @@ def diagnosis_run(
         logger.warning(m18n.n("diagnosis_display_tip"))
 
 
-def diagnosis_ignore(add_filter=None, remove_filter=None, list=False):
+def diagnosis_ignore(filter, list=False):
+    return _diagnosis_ignore(add_filter=filter, list=list)
+
+
+def diagnosis_unignore(filter):
+    return _diagnosis_ignore(remove_filter=filter)
+
+
+def _diagnosis_ignore(add_filter=None, remove_filter=None, list=False):
     """
     This action is meant for the admin to ignore issues reported by the
     diagnosis system if they are known and understood by the admin.  For