Feature request: Configurable resource request and limit on all loki components

[c0ffeec0der]

Hello,

I would like to request feature when deploying with tanka, resource request and limit is configurable.

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Is your feature request related to a problem? Please describe.
Loki components resource request and limit is too large light to moderate usage

Describe the solution you'd like
Configurable resource request and limit

Describe alternatives you've considered
Using single instance

Additional context

[c0ffeec0der]

Solution from conversations

// adjust resource
gateway_container+::
$.util.resourcesRequests('10m', '10Mi') +
$.util.resourcesLimits('20m','20Mi'),

// adjust replica
gateway_deployment+:
$.apps.v1.deployment.mixin.spec.withReplicas(1),

// adjust resource for memcached
memcached_chunks+: {
memory_limit_mb: 1024,
memcached_container+::
$.util.resourcesRequests('10m', $.util.bytesToK8sQuantity(self.memory_request_bytes)) +
$.util.resourcesLimits('20m',$.util.bytesToK8sQuantity(self.memory_limits_bytes)),
},