examples: add a simple example

Signed-off-by: Arthur Outhenin-Chalandre <arthur.outhenin-chalandre@cern.ch>

examples/simple/main.tf

@@ -0,0 +1,29 @@
+terraform {
+  required_version = ">= 0.14.0"
+  required_providers {
+    ceph = {
+      source  = "cernops/ceph"
+      version = "~> 0.1.0"
+    }
+  }
+}
+
+provider "ceph" {
+  entity = "client.admin"
+}
+
+resource "ceph_wait_online" "wait" {
+    cluster_name = "my-super-cluster"
+}
+
+resource "ceph_auth" "test" {
+    entity = "client.test"
+    caps = {
+        "mon": "allow *",
+        "osd": "allow rw",
+        "mds": "allow rw"
+    }
+    depends_on = [
+        ceph_wait_online.test
+    ]
+}