Add support for ExirationDate value for groups.memberships.ExpiryDetail

[salrashid123]

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Description

Add support for automatic expirations of group members
https://cloud.google.com/identity/docs/how-to/manage-expirations

this feature allows an admin to programatically set an expiration time for a user in a google group. this can be used to control 'firecall' or just in time access.

The current cloud_identity_group resource does not allow setting this value

Note, if a user is added to a group through a discrete operation ouside of using this module (eg, a resource provisioning the user ot a group directly using https://cloud.google.com/identity/docs/reference/rest/v1/groups.memberships/create) then when if the auto expiration is set and the user is removed out of band, the first terraform provisioning step would see the resource is not present and attempt to readd this. This may cause some significant issues but i'm not sure if this new flag in this resource would cause more potential harm than help..

New or Affected Resource(s)

https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/cloud_identity_group

• google_cloud_identity_group

Potential Terraform Configuration

suggested form:

resource "google_cloud_identity_group_membership" "cloud_identity_group_membership_basic" {
  group = "groups/02grqrue4gb58m7"

  preferred_member_key {
    id = "user1@esodemoapp2.com"
  }
  roles {
    name = "MEMBER"
    expiry_detail {
      expire_time = "2014-10-02T15:01:23Z"
    }
  }
}

References

GoogleCloudPlatform/magic-modules#3696

https://github.com/salrashid123/iam_autorevoke#terraform

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