Add policy files for Vault: admin, app_role, and identity policies

policies/app_role_admin.hcl

@@ -0,0 +1,19 @@
+# Mount the AppRole auth method
+path "sys/auth/approle" {
+  capabilities = [ "create", "read", "update", "delete", "sudo" ]
+}
+
+# Configure the AppRole auth method
+path "sys/auth/approle/*" {
+  capabilities = [ "create", "read", "update", "delete" ]
+}
+
+# Create and manage roles
+path "auth/approle/*" {
+  capabilities = [ "create", "read", "update", "delete", "list" ]
+}
+
+# Write ACL policies
+path "sys/policies/acl/*" {
+  capabilities = [ "create", "read", "update", "delete", "list" ]
+}