Provide ability to run preStop command

Change-Id: Ia6b7db68980d99555f23c0c568b6b9cf34b70968

fuel_ccp/__init__.py

@@ -17,4 +17,4 @@ import pbr.version
 
 version_info = pbr.version.VersionInfo("fuel_ccp")
 __version__ = version_info.version_string()
-dsl_version = "0.8.0"
+dsl_version = "0.9.0"

fuel_ccp/templates.py

@@ -214,6 +214,9 @@ def serialize_daemon_container_spec(container):
         cont_spec.update(liveness_spec)
     cont_spec["securityContext"] = {"privileged":
                                     container.get("privileged", False)}
+    lifecycle = container.get("lifecycle", None)
+    if lifecycle:
+        cont_spec["lifecycle"] = lifecycle
 
     return cont_spec
 

fuel_ccp/validation/service.py

@@ -299,6 +299,12 @@ SERVICE_SCHEMA = {
                                     "liveness": PROBE_SCHEMA
                                 }
                             },
+                            "lifecycle": {"type": "object",
+                                          "properties":
+                                              {"PreStop": {
+                                                  "type": "object"
+                                              }}
+                                          },
                             "volumes": {
                                 "type": "array",
                                 "minItems": 1,