Add bandwidthAllocation field to wireGroup Resource (#15169) (#24460)

[upstream:2e72ae21357017003cebff32d3db58250419c659]

Signed-off-by: Modular Magician <magic-modules@google.com>

Author: modular-magician

.changelog/15169.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+compute: added `bandwidth_allocation` field to `google_compute_wire_group` resource
+```

website/docs/r/compute_wire_group.html.markdown

@@ -57,6 +57,7 @@ resource "google_compute_wire_group" "example-test-wire-group" {
   wire_properties {
     bandwidth_unmetered = 10
     fault_response =  "NONE"
+    bandwidth_allocation = "ALLOCATE_PER_WIRE"
   }
   wire_group_properties {
     type = "WIRE"
@@ -152,6 +153,13 @@ The following arguments are supported:
   NONE: default.
   DISABLE_PORT: set the port line protocol down when inline probes detect a fault. This setting is only permitted on port mode pseudowires.
 
+* `bandwidth_allocation` -
+  (Required)
+  The configuration of a wire's bandwidth allocation.
+  ALLOCATE_PER_WIRE: configures a separate unmetered bandwidth allocation (and associated charges) for each wire in the group.
+  SHARED_WITH_WIRE_GROUP: this is the default behavior, which configures one unmetered bandwidth allocation for the wire group. The unmetered bandwidth is divided equally across each wire in the group, but dynamic
+  throttling reallocates unused unmetered bandwidth from unused or underused wires to other wires in the group.
+
 ## Attributes Reference
 
 In addition to the arguments listed above, the following computed attributes are exported: