Reset the integration test k8s helper's `RetryLoop` to its original
value, and instead only wait an extra long time to allow the mgr module
updates to take a long time after Ceph is updated from Mimic to Nautilus
as part of Ceph's upgrade integration test.
Updating mgr modules can hang for quite a while, which causes the tests
to time out waiting for the OSDs to be updated. Allow this to take a
long time so the tests aren't as flaky.
Signed-off-by: Blaine Gardner <blaine.gardner@suse.com>