feat(oci): add admin policy

tf/oci_common_private_network/nsg.tf

@@ -0,0 +1,26 @@
+resource "oci_core_network_security_group" "this" {
+  compartment_id = var.tenancy_ocid
+  vcn_id         = oci_core_vcn.this.id
+
+  display_name = oci_core_vcn.this.display_name
+}
+
+locals {
+  protocol_number = {
+    icmp   = 1
+    icmpv6 = 58
+    tcp    = 6
+    udp    = 17
+  }
+}
+
+resource "oci_core_network_security_group_security_rule" "this" {
+  direction                 = "INGRESS"
+  network_security_group_id = oci_core_network_security_group.this.id
+  protocol                  = local.protocol_number.icmp
+  source                    = "0.0.0.0/0"
+}
+
+output "nsg_id" {
+  value = oci_core_network_security_group.this.id
+}