feat: Add available_cpu to service_config

[andrewwljackson]

In reference to this issue brought up:
#63

[gtsorbo]

/gcbrun

[gtsorbo]

/gcbrun

[gtsorbo]

/gcbrun

[andrewwljackson]

@gtsorbo sorry about missing the docs, is this ok for merge?

[jeunii]

Hello. Im adding the available_cpu parameter like this

module "cloud_functions_pattern1a_copy_paste" {
  source  = "GoogleCloudPlatform/cloud-functions/google"
  version = "0.4.1"
...

  service_config = {
    available_memory = "2Gi"
    available_cpu    = 2
    min_instance_count = "0"
    timeout_seconds = "60"
  }

But the generated CF only has 1 CPU. Ive also tried it as

    available_cpu    = "2"
    # and
     available_cpu    = "2000m"

But it doesnt seem to be taking it.

Im using tf version 1.5.7

[jeunii]

I see this change in not in the latest release of the module ? When can we expect that ?