[doc] How to disable linter for v1-only tests

docs/how_to_add_packages.md

@@ -188,6 +188,10 @@ project files as simple as possible, without the need of extra logic to handle d
 The CI will explore all the folders and run the tests for the ones matching `test_*/conanfile.py` pattern. You can find the output of all
 of them together in the testing logs.
 
+> **Note.-** If, for any reason, it is useful to write a test that should only be checked using Conan v1, you can do so by using the pattern
+> `test_v1_*/conanfile.py` for the folder. Please, have a look to [linter notes](v2_linter.md) to know how to prevent the linter from
+> checking these files.
+
 > Remember that the `test_<package>` recipes should **test the package configuration that has just been generated** for the _host_ context, otherwise
 > it will fail in crossbuilding scenarios.
 

docs/v2_linter.md

@@ -1,6 +1,9 @@
 Linter to help migration to Conan v2
 ====================================
 
+<!-- toc -->
+<!-- endToc -->
+
 On our [path to Conan v2](v2_roadmap.md) we are leveraging on custom Pylint rules. This
 linter will run for every pull-request that is submitted to the repository and will
 raise some warnings and errors that should be addressed in order to migrate the
@@ -42,3 +45,18 @@ class Recipe(ConanFile):
         if not cross_building(self):
             pass
 ```
+
+# Disable linter for `test_v1_*/conanfile.py`
+
+Using the pattern `test_v1_*/conanfile.py` you can write a test that will be executed using only Conan v1,
+you probably don't want v2-migration linter to check this file, as it will likely contain syntax that is
+specific to Conan v1.
+
+To skip the file you just need to add the following comment to the file and `pylint` will skip it:
+
+**`test_v1_*/conanfile.py`**
+```python
+# pylint: skip-file
+from conans import ConanFile, CMake, tools
+...
+```