adds quota manager, which helps in updating the project quotas

[yunus]

Provides a simple module quota.py to update the service quotas of projects programmatically via APIs.
The other option to update the quotas are via console which is a manual work. So this module enables GCP customer to automate the quota update process.

[dvmorris]

This is awesome! Have you ever tried updating a compute engine quota? I tried this morning and I am getting this error:

03/04/2020 07:28:05 INFO:URL being requested: POST https://serviceusage.googleapis.com/v1beta1/projects/*******/services/compute.googleapis.com/consumerQuotaMetrics/compute.googleapis.com%252Fnvidia_t4_gpus
/limits/%252Fproject%252Fregion/consumerOverrides?force=true&alt=json
Traceback (most recent call last):
  File "./update-computeengine-quota.py", line 109, in <module>
    project_quota=namespace.project_quota)
  File "./update-computeengine-quota.py", line 95, in main
    quota_updater.update_quota(project_quota, quota_dimensions)
  File "/home/dave/professional-services/tools/quota-manager/quota.py", line 171, in update_quota
    operation = self.__create_new_quota(new_quota, dimensions)
  File "/home/dave/professional-services/tools/quota-manager/quota.py", line 130, in __create_new_quota
    body=body)\
  File "/home/dave/.local/share/virtualenvs/quota-manager-7vDkce0R/lib/python3.7/site-packages/googleapiclient/_helpers.py", line 134, in positional_wrapper
    return wrapped(*args, **kwargs)
  File "/home/dave/.local/share/virtualenvs/quota-manager-7vDkce0R/lib/python3.7/site-packages/googleapiclient/http.py", line 898, in execute
    raise HttpError(resp, content, uri=self.uri)
googleapiclient.errors.HttpError: <HttpError 400 when requesting https://serviceusage.googleapis.com/v1beta1/projects/*******/services/compute.googleapis.com/consumerQuotaMetrics/compute.googleapis.com%252F
nvidia_t4_gpus/limits/%252Fproject%252Fregion/consumerOverrides?force=true&alt=json returned "Precise limit override on metric 'compute.googleapis.com/nvidia_t4_gpus' with limit /project/region can't be applied in
 service :compute.googleapis.com">

I created a new class that passes the "dimension" attribute, and I tried updating a regional quota like nvidia_t4_gpus. I got the idea for the dimension attribute from this page: https://cloud.google.com/service-usage/docs/reference/rest/v1beta1/services.consumerQuotaMetrics.limits.adminOverrides#QuotaOverride

[yunus]

@dvmorris I have added the dimensions but still getting the same error as you have. I suspect that compute engine apis cannot be updated via APIs. I have asked about this internally. You are in CC.

[yunus]

@dvmorris it turns out that compute engine quotas cannot be updated via APIs yet. But soon they will be ready for update.

[boredabdel]

LGTM except one comment

[boredabdel]

I'm not able to merge this change but it looks good. Added Ryan and Jacob who i believe can merge