Convert netdata into its own role

ansible/roles/netdata/files/docker-compose.yml

@@ -0,0 +1,18 @@
+version: "2.3"
+
+services:
+  netdata:
+    image: netdata/netdata:latest
+    container_name: netdata
+    cap_add:
+      - SYS_PTRACE
+    security_opt:
+      - apparmor:unconfined
+    volumes:
+      - /etc/passwd:/host/etc/passwd:ro
+      - /etc/group:/host/etc/group:ro
+      - /proc:/host/proc:ro
+      - /sys:/host/sys:ro
+    restart: unless-stopped
+    ports:
+      - 19999:19999