clearing the cache of the push client works only on one node

[zcgandcomp]

Step to reproduce:
Create FCM config for an application.
Create APNS configuration for the application.
Send push notifications for the registration of the application for the Android platform. (client is stored in cache)
Remove APNS configuration for the application.
Restart the server
Create APNS configuration for the application.
Send push notifications for the registration of the application for the iOS platform. (client is read from cache)

Expected result:
The push notification is sent.

Actual result:
No push is sent. An error in the log:
Push message cannot be sent to APNS because APNS is not configured in push server

The case should be invalidated when the configuration is updated, but we are experiencing this issue. The problem is with multiple instances; the cache is invalidated only on one instance.

[banterCZ]

Let's try to limit the expiration time.

[zcgandcomp]

smoke test if we receive the pish notificate.
@korbelm deploy on stable after merge.