The response of tenant_quota_usages is now baesd on the limit API,
so tenant_limit_usages and tenant_quota_usages provide same information.
This commit changes all consumers of tenant_limit_usages to use
tenant_quota_usages and updates the corresponding templates.
blueprint make-quotas-great-again
Change-Id: I620e2946f2aca31bac134c247ceaf971498f9eeb