Add Astara mitaka deliverables

Astara is a non:release-managed project. We just cut our m-1
tags across the 4 Astara repositories.  This adds new deliverable
files that records those as per [1].

Patches to remove version from setup.py as follows:

    * astara: https://review.openstack.org/255033
    * astara-appliance: https://review.openstack.org/255034
    * astara-horizon: https://review.openstack.org/255035
    * astara-neutron: https://review.openstack.org/255036

[1] http://lists.openstack.org/pipermail/openstack-dev/2015-December/081431.html

Depends-On: Ie4a99316e60ca382f8d6323720f92ffb6642b66c
Change-Id: I52cd0e7583d224cf99922845f947824179debe7b

deliverables/mitaka/astara-appliance.yaml

@@ -0,0 +1,7 @@
+---
+launchpad: astara
+releases:
+  - version: 8.0.0.0b1
+    projects:
+      - repo: openstack/astara-appliance
+        hash: e595595163a007fc21d76fdee1918333f4790198

deliverables/mitaka/astara-horizon.yaml

@@ -0,0 +1,7 @@
+---
+launchpad: astara
+releases:
+  - version: 8.0.0.0b1
+    projects:
+      - repo: openstack/astara-horizon
+        hash: 5e03ad32ac1156205adc3c1999b22281da6e67a2

deliverables/mitaka/astara-neutron.yaml

@@ -0,0 +1,7 @@
+---
+launchpad: astara
+releases:
+  - version: 8.0.0.0b1
+    projects:
+      - repo: openstack/astara-neutron
+        hash: aa029dec8e441d7a7fcdbaa459d390b35f906d11

deliverables/mitaka/astara.yaml

@@ -0,0 +1,7 @@
+---
+launchpad: astara
+releases:
+  - version: 8.0.0.0b1
+    projects:
+      - repo: openstack/astara
+        hash: 005c114bfb02e25a9247108b97c79a28160bd27e