docs: add autoscaler plugin ACL details and SIGHUP mention.

website/pages/docs/autoscaling/agent.mdx

@@ -30,7 +30,7 @@ the autoscaler for fetching scaling policies and scaling jobs:
 
 ```hcl
 namespace "default" {
-  policy       = "scale"
+  policy = "scale"
 }
 
 Other APM and target plugins may require additional ACLs; see the plugin documentation for more information.
@@ -56,6 +56,15 @@ any non-empty values from the latest config file will append or replace
 parameters in the current configuration. An empty value means `""` for strings,
 `0` for integer or float values, and `false` for booleans.
 
+## SIGHUP Reload
+
+The Nomad Autoscaler agent supports handling the `SIGHUP` signal for reloading without the need for
+restarting the agent. When sending a `SIGHUP` signal to the agent process, the agent will perform the
+following actions.
+
+- reload the contents of the scaling policy directory as defined by the [policy dir][autoscaler_cli_policy_dir]
+  parameter.
+
 ## General Parameters
 
 - `log_level` `(string: "INFO")` - Specify the verbosity level of Nomad
@@ -238,3 +247,4 @@ strategy "example-strategy-plugin" {
 [nomad_namespaces]: https://learn.hashicorp.com/nomad/governance-and-policy/namespaces
 [nomad_acls]: https://learn.hashicorp.com/nomad?track=acls#acls
 [autoscaler_cli_config]: /docs/autoscaling/cli#config
+[autoscaler_cli_policy_dir]: /docs/autoscaling/cli#policy-dir

website/pages/docs/autoscaling/plugins/apm.mdx

@@ -59,6 +59,29 @@ target "nomad-apm" {
 }
 ```
 
+When using a Nomad cluster with ACLs enabled, following ACL policy will provide the appropriate
+permissions for obtaining task group metrics:
+
+```hcl
+namespace "default" {
+  policy       = "read"
+  capabilities = ["read-job"]
+}
+```
+
+In order to obtain cluster level metrics, the following ACL policy will be required:
+
+```hcl
+node {
+  policy = "read"
+}
+
+namespace "default" {
+  policy       = "read"
+  capabilities = ["read-job"]
+}
+```
+
 ### Policy Configuration Options - Task Groups
 
 The Nomad APM allows querying Nomad to understand the current resource usage of

website/pages/docs/autoscaling/plugins/target.mdx

@@ -101,6 +101,15 @@ target "aws-asg" {
 }
 ```
 
+When using a Nomad cluster with ACLs enabled, the plugin will require an ACL token which provides
+the following permissions:
+
+```hcl
+node {
+  policy = "write"
+}
+```
+
 - `aws_region` `(string: "us-east-1")` - The [AWS region][aws_region] identifier
   to connect to and where resources should be managed.
 
@@ -119,9 +128,9 @@ target "aws-asg" {
 check {
   ...
   target "aws-asg" {
-    asg_name       = "hashistack-client-asg"
-    class          = "hashistack"
-    drain_deadline = "5m"
+    aws_asg_name        = "hashistack-client-asg"
+    node_class          = "hashistack"
+    node_drain_deadline = "5m"
   }
   ...
 ```