Update resource settings for the lifecycle sidecar and init containers for the gateway deployment templates

[kschoche]

currently the gateways do not have resource settings for their lifecycle sidecars and the resource settings for the init container which issues a cp of the consul binary has resource settings which are too low.

This PR :

1. adds the resource settings for the lifecycle sidecar, increases the lifecycle sidecar cpu settings from 10m to 20m
2. adds the resource settings for the init container which copies the consul bin and increases the memory limits only from the respective pod deployments to 150Mi only for the init container.

[lkysow]

I tested mesh, ingress and terminating gateways alongside your consul-k8s changes for inject and all the resources are set correctly!