[PR #10086/60f1169d backport][stable-10] CI: Use community.crypto 2.x.y for ansible-core 2.16 and before (#10089)

CI: Use community.crypto 2.x.y for ansible-core 2.16 and before (#10086)

* Use community.crypto 2.x.y for ansible-core 2.16 and before.

* Also use stable-2 for ubuntu2004 tests.

(cherry picked from commit 60f1169d42)

Co-authored-by: Felix Fontein <felix@fontein.de>

.github/workflows/ansible-test.yml

@@ -166,6 +166,7 @@ jobs:
           integration-continue-on-error: 'false'
           integration-diff: 'false'
           integration-retry-on-error: 'true'
+          # TODO: remove "--branch stable-2" from community.crypto install once we're only using ansible-core 2.17 or newer!
           pre-test-cmd: >-
             mkdir -p ../../ansible
             ;