VPN Server Delete wait logic changes

[SunithaGudisagarIBM1]

resource "ibm_is_vpn_server" "is_vpn_server" {
  certificate_crn = "crn:v1:bluemix:public:secrets-manager:us-south:a/7f75c7b025e54bc5635f754b2f888665:0d7981e7-b381-424e-a3c7-0af38f471d87:secret:cdcee4c3-4558-ed20-2bc0-3df0a93af2aa"
  client_authentication {
    method        = "certificate"
    client_ca_crn = "crn:v1:bluemix:public:secrets-manager:us-south:a/7f75c7b025e54bc5635f754b2f888665:0d7981e7-b381-424e-a3c7-0af38f471d87:secret:c329a9cd-08dc-bcae-b42b-bc8b0927562a"
  }
  client_ip_pool         = "192.167.0.0/16"
  enable_split_tunneling = true
  name                   = "sunitha-vpn-server"
  port                   = 443
  protocol               = "tcp"
  subnets                = ["0727-5adc42b5-fcba-4f12-9c36-e15d305c919e"]
  security_groups        = ["r006-a4281eaa-023b-41bb-8060-247eb0bb5e68"]
}
resource "ibm_is_vpn_server_route" "is_vpn_server_route" {
  vpn_server  = ibm_is_vpn_server.is_vpn_server.id
  destination = "172.16.0.0/16"
  action      = "translate"
  name        = "sunitha-vpn-server-route"
}