[ENHANCEMENT] Add support for flow_sampler_map #196 (#58)

* Implemented iosxr_flow_sampler_map feature

* Updated the fix

Author: shashidhar184

README.md

@@ -66,6 +66,7 @@ module "iosxr" {
 | [iosxr_domain.domain](https://registry.terraform.io/providers/CiscoDevNet/iosxr/latest/docs/resources/domain) | resource |
 | [iosxr_domain_vrf.domain_vrf](https://registry.terraform.io/providers/CiscoDevNet/iosxr/latest/docs/resources/domain_vrf) | resource |
 | [iosxr_evpn.evpn](https://registry.terraform.io/providers/CiscoDevNet/iosxr/latest/docs/resources/evpn) | resource |
+| [iosxr_flow_sampler_map.flow_sampler_map](https://registry.terraform.io/providers/CiscoDevNet/iosxr/latest/docs/resources/flow_sampler_map) | resource |
 | [iosxr_hostname.hostname](https://registry.terraform.io/providers/CiscoDevNet/iosxr/latest/docs/resources/hostname) | resource |
 | [iosxr_interface.interface](https://registry.terraform.io/providers/CiscoDevNet/iosxr/latest/docs/resources/interface) | resource |
 | [iosxr_ipv4_prefix_list.ipv4_prefix_list](https://registry.terraform.io/providers/CiscoDevNet/iosxr/latest/docs/resources/ipv4_prefix_list) | resource |

iosxr_flow_sampler_map.tf

@@ -0,0 +1,22 @@
+locals {
+  device_flow_sampler_maps = flatten([
+    for device in local.devices : [
+      for sampler_map in try(local.device_config[device.name].flow_sampler_map, []) : {
+        device_name = device.name
+        key         = "${device.name}-flow-sampler-map-${sampler_map.name}"
+        name        = try(sampler_map.name, local.defaults.iosxr.configuration.flow_sampler_map.name, null)
+        random      = try(sampler_map.random, local.defaults.iosxr.configuration.flow_sampler_map.random, null)
+        out_of      = try(sampler_map.out_of, local.defaults.iosxr.configuration.flow_sampler_map.out_of, null)
+      }
+    ]
+  ])
+}
+
+resource "iosxr_flow_sampler_map" "flow_sampler_map" {
+  for_each = { for sampler_map in local.device_flow_sampler_maps : sampler_map.key => sampler_map }
+  device   = each.value.device_name
+
+  name   = each.value.name
+  random = each.value.random
+  out_of = each.value.out_of
+}