ssh: generate tmp rename file in tmp dir rather then location of file.

This is mostly due to possible docker mount permission issues

rhodecode/apps/ssh_support/utils.py

@@ -49,11 +49,12 b' def get_all_active_keys():'
 
 def _generate_ssh_authorized_keys_file(
         authorized_keys_file_path, ssh_wrapper_cmd, allow_shell, ssh_opts, debug):
+    import rhodecode
 
     authorized_keys_file_path = os.path.abspath(
         os.path.expanduser(authorized_keys_file_path))
+    tmp_file_dir = tempfile.gettempdir()
 
-    import rhodecode
     all_active_keys = get_all_active_keys()
 
     if allow_shell:
@@ -73,8 +74,8 b' def _generate_ssh_authorized_keys_file('
     line_tmpl = '{ssh_opts},command="{wrapper_command} {ini_path} --user-id={user_id} --user={user} --key-id={user_key_id}" {key}\n'
 
     fd, tmp_authorized_keys = tempfile.mkstemp(
-        '.authorized_keys_write',
-        dir=os.path.dirname(authorized_keys_file_path))
+        '.authorized_keys_write_operation',
+        dir=tmp_file_dir)
 
     now = datetime.datetime.utcnow().isoformat()
     keys_file = os.fdopen(fd, 'wb')