Set deployment order of tasks

Pick priorities 8200+ from the range reserved for
monitoring services deployment (8000-8999).
Lower priorities are used to install "backends" before the LMA collector.

Change-Id: Id2783da6a6f549c4fd4fdf34c5e8af5461b28c11

tasks.yaml

@@ -1,13 +1,15 @@
+# This task is executed before any real deployment task
 - role: ['primary-controller']
-  stage: post_deployment
+  stage: post_deployment/8000
   type: puppet
   parameters:
     puppet_manifest: puppet/manifests/check_environment_configuration.pp
     puppet_modules: puppet/modules
     timeout: 300
 
+# The following tasks are executed in the order they are declared
 - role: '*'
-  stage: post_deployment
+  stage: post_deployment/8200
   type: puppet
   parameters:
     puppet_manifest: puppet/manifests/base.pp
@@ -15,7 +17,7 @@
     timeout: 600
 
 - role: ['controller', 'primary-controller']
-  stage: post_deployment
+  stage: post_deployment/8200
   type: puppet
   parameters:
     puppet_manifest: puppet/manifests/controller.pp
@@ -23,7 +25,7 @@
     timeout: 600
 
 - role: [ 'compute' ]
-  stage: post_deployment
+  stage: post_deployment/8200
   type: puppet
   parameters:
     puppet_manifest: puppet/manifests/compute.pp
@@ -31,7 +33,7 @@
     timeout: 600
 
 - role: ['cinder']
-  stage: post_deployment
+  stage: post_deployment/8200
   type: puppet
   parameters:
     puppet_manifest: puppet/manifests/cinder.pp
@@ -39,7 +41,7 @@
     timeout: 600
 
 - role: ['ceph-osd']
-  stage: post_deployment
+  stage: post_deployment/8200
   type: puppet
   parameters:
     puppet_manifest: puppet/manifests/ceph_osd.pp