Update generated example library content (#159)

Author: TobiasBabin

resource-definitions/template-driver/serviceaccount/serviceaccount-k8ssa-def.tf

@@ -7,7 +7,11 @@ resource "humanitec_resource_definition" "serviceaccount-k8s-service-account" {
     values_string = jsonencode({
       "res_id" = "$${context.res.id}"
       "templates" = {
-        "init"      = "name: {{ index ( .driver.values.res_id | splitList \".\" ) 1 }}\n"
+        "init"      = <<END_OF_TEXT
+res_id: {{ .driver.values.res_id }}
+{{- $res_name := .driver.values.res_id | splitList "." | last }}
+name: {{ $res_name | toRawJson }}
+END_OF_TEXT
         "outputs"   = "name: {{ .init.name }}\n"
         "manifests" = <<END_OF_TEXT
 service-account.yaml:
@@ -17,6 +21,8 @@ service-account.yaml:
     kind: ServiceAccount
     metadata:
       name: {{ .init.name }}
+      annotations:
+        hum-res: {{ .init.res_id }}
 END_OF_TEXT
       }
     })

resource-definitions/template-driver/serviceaccount/serviceaccount-workload-def.tf

@@ -10,7 +10,10 @@ resource "humanitec_resource_definition" "serviceaccount-workload" {
 update: 
 - op: add
   path: /spec/serviceAccountName
+  # Option 1: separate ServiceAccount per workload. Using the current workload's ID by not specifying an ID
   value: $${resources.k8s-service-account.outputs.name}
+  # Option 2: single ServiceAccount for all workloads. Specifying a fixed ID, e.g. "ksa"
+  # value: $${resources.k8s-service-account#ksa.outputs.name}
 END_OF_TEXT
       }
     })