feat(node): DNS components: CoreDNS, PowerDNS (#302)

Signed-off-by: Nicolas Lamirault <nicolas.lamirault@gmail.com>

diagrams/onprem/dns.py

@@ -0,0 +1,19 @@
+# This module is automatically generated by autogen.sh. DO NOT EDIT.
+
+from . import _OnPrem
+
+
+class _Dns(_OnPrem):
+    _type = "dns"
+    _icon_dir = "resources/onprem/dns"
+
+
+class Coredns(_Dns):
+    _icon = "coredns.png"
+
+
+class Powerdns(_Dns):
+    _icon = "powerdns.png"
+
+
+# Aliases

docs/nodes/onprem.md

@@ -91,6 +91,11 @@ Node classes list of onprem provider.
 - **diagrams.onprem.database.Postgresql**, **PostgreSQL** (alias)
 - **diagrams.onprem.database.Scylla**
 
+## onprem.dns
+
+- **diagrams.onprem.dns.Coredns**
+- **diagrams.onprem.dns.Powerdns**
+
 ## onprem.etl
 
 - **diagrams.onprem.etl.Embulk**