Add MongoDB and Redis user provider

[lpatte]

trafficstars

• MongoDB User Lifecycle
• Redis User Lifecycle
• Import Test for Cloud Databases resources
• Fix Database User Resource Import
• Add ForceNew in Database Resource
• add Retry in IP restriction to work with MongoDB
• Use ValidateFunc for Database User engine input instead custom validation process

[lpatte]

@ovh/cloud-databases please review

[scraly]

review in progress

one modification to do in the doc please:

resource "ovh_cloud_project_database" "mongodb" {
  service_name = var.openstack_infos.project_id

resource "ovh_cloud_project_database" "mongodb" {
 service_name = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

:)

[scraly]

Thanks, it's OK for me :)