[PATCH v2] doc: update LTS maintenance to 3 years

[Kevin Traynor <ktraynor@redhat.com>]

The existing official policy was to maintain LTS releases for 2 years.

19.11 and 20.11 LTS releases were maintained for 3 years and there was
not significant issues caused by code divergence from main etc.

Update the policy to indicate 3 years maintenance for LTS releases, but
note that it depends on community support.

Signed-off-by: Kevin Traynor <ktraynor@redhat.com>

---

v2: fix typo in commit message
---
 doc/guides/contributing/stable.rst | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/doc/guides/contributing/stable.rst b/doc/guides/contributing/stable.rst
index 8156b72b20..289769a61d 100644
--- a/doc/guides/contributing/stable.rst
+++ b/doc/guides/contributing/stable.rst
@@ -54,5 +54,6 @@ LTS Release
 A stable release can be designated as an LTS release based on community
 agreement and a commitment from a maintainer. The current policy is that each
-year's November (X.11) release will be maintained as an LTS for 2 years.
+year's November (X.11) release will be maintained as an LTS for 3 years,
+however that is dependent on continued community support for validation.
 
 After the X.11 release, an LTS branch will be created for it at
-- 
2.43.0