T407375: Set healthcheck workarround with cron

[chicocvenancio]

It would be better to have it integrated into the code with a heartbeat and do some tracing to figure out why the workers are hanging, but this should get the workers back to working.

[don-vip]

Mmm there's an error when applying it:

Error: Evaluation Error: Error while evaluating a Resource Statement, Cron::Job[v2chealthcheck]: parameter 'minute' expects a Cron::Minute = Variant[Integer[0, 59], Pattern[/(?x)\A(
    \* ( \/ ( [1-5][0-9]?|[6-9] ) )?
    |         [1-5]?[0-9] ( - [1-5]?[0-9] ( \/ ( [1-5][0-9]?|[6-9] ) )? )?
        ( ,   [1-5]?[0-9] ( - [1-5]?[0-9] ( \/ ( [1-5][0-9]?|[6-9] ) )? )? )*
  )\z/]] value, got String (file: /mnt/nfs/labstore-secondary-home/don-vip/backend-bookworm.pp, line: 295) on node encoding01.video.eqiad1.wikimedia.cloud

[don-vip]

Changed to */5 and applied on all encoder instances.