Ivan Genchev

Fixes #58.

Add flag for setting the cache sync timeout

4

**Description** Fixes #2999 **Checklist** - [X] Unit tests updated - [x] End user documentation updated

Add flag for setting the cache sync timeout

13

**What would you like to be added**: Flag for setting a custom cache sync timeout. **Why is this needed**: We have a few clusters with a lot of pods, deployments...

Flag to write/sync secrets to a namespace other than the namespace where the Certificate object is created

16

**Is your feature request related to a problem? Please describe.** This [Istio Ingress Gateway can only read secrets from the namespace where it is deployed](https://istio.io/latest/docs/ops/integrations/certmanager/), so it would be beneficial...