views: select the most used repo in Set repository view

Preselect the most used repository among the selected clients
for the view Commands -> Setup -> Set repository

Change get_clients_oglive() into def get_client_list_by_key()
to obtain a dictionary with the list of ips of the clients with
the same value in the field of the client payload passed as key.
For example for the key 'repo_id' it would return a dictionary
{repo_id: [ips of the clients with that repo_id]}

ogcp/views.py

@@ -2470,8 +2470,8 @@ def action_mode():
                                selected_clients=selected_clients,
                                clients=clients, modes_set=modes_set)
 
-def get_clients_oglive(ips, server):
-    oglives = {}
+def get_client_list_by_key(ips, server, key):
+    ret = {}
     for ip in ips:
         r = server.get('/client/info', payload={"client": [ip]})
         if not r:
@@ -2479,12 +2479,12 @@ def get_clients_oglive(ips, server):
         if r.status_code != requests.codes.ok:
             raise ServerErrorCode
         resp = r.json()
-        oglive = resp['livedir']
-        if oglive not in oglives:
-            oglives[oglive] = [ip]
+        val = resp[key]
+        if val not in ret:
+            ret[val] = [ip]
         else:
-            oglives[oglive].append(ip)
-    return oglives
+            ret[val].append(ip)
+    return ret
 
 @app.route('/action/oglive', methods=['GET', 'POST'])
 @login_required
@@ -2511,7 +2511,7 @@ def action_oglive():
         server = get_server_from_clients(list(ips))
 
         try:
-            oglives_set = get_clients_oglive(ips, server)
+            oglives_set = get_client_list_by_key(ips, server, key='livedir')
         except ServerError:
             return ogserver_down('commands')
         except ServerErrorCode:
@@ -2601,9 +2601,25 @@ def action_repo_set():
         except ServerErrorCode:
             return ogserver_error(r, 'commands')
 
-        form.repo.choices = [(repo["id"], repo["name"]) for repo in repositories]
-
         scopes, clients = get_scopes(set(ips))
+
+        try:
+            repo_set = get_client_list_by_key(ips, server, key='repo_id')
+        except ServerError:
+            return ogserver_down('commands')
+        except ServerErrorCode:
+            return ogserver_error(r, 'commands')
+
+        most_used_repo_id = max(repo_set, key=lambda id: len(repo_set[id]))
+
+        form.repo.choices = []
+        for repo in repositories:
+            repo_entry = (repo["id"], repo["name"])
+            if repo["id"] == most_used_repo_id:
+                form.repo.choices.insert(0, repo_entry)
+            else:
+                form.repo.choices.append(repo_entry)
+
         selected_clients = list(get_selected_clients(scopes['scope']).items())
         return render_template('actions/repo_set.html', repos_set=repos_set, form=form, scopes=scopes,
                                selected_clients=selected_clients)