feat(get.jenkins.io/storage): new premium storage class for get.jenkins.io

[smerle33]

as per jenkins-infra/helpdesk#3917

[dduportal]

LGTM! Plan looks good

[dduportal]

For info, this PR failed to deploy with the following error:

 Error: creating Storage Account (Subscription: "****"
 │ Resource Group Name: "get-jenkins-io"
 │ Storage Account Name: "getjenkinsio"): storage.AccountsClient#Create: Failure sending request: StatusCode=400 -- Original Error: Code="LocationNotValid" Message="Supplied location eastus2 is not valid."
 │ 
 │   with azurerm_storage_account.get_jenkins_io,
 │   on get.jenkins.io.tf line 8, in resource "azurerm_storage_account" "get_jenkins_io":
 │    8: resource "azurerm_storage_account" "get_jenkins_io" {

[dduportal]

For info, this PR failed to deploy with the following error:

 Error: creating Storage Account (Subscription: "****"
 │ Resource Group Name: "get-jenkins-io"
 │ Storage Account Name: "getjenkinsio"): storage.AccountsClient#Create: Failure sending request: StatusCode=400 -- Original Error: Code="LocationNotValid" Message="Supplied location eastus2 is not valid."
 │ 
 │   with azurerm_storage_account.get_jenkins_io,
 │   on get.jenkins.io.tf line 8, in resource "azurerm_storage_account" "get_jenkins_io":
 │    8: resource "azurerm_storage_account" "get_jenkins_io" {

Gotcha! we want account_kind to be FileStorage (and not StorageV2 by default)