Release notes for newton-3

This compiles the changes we made during newton-3 phase.

Change-Id: Ie885286398c71e89a74f445debd379ad0b5487c5

releasenotes/notes/api-ref-fixes-19bc963430c32ecf.yaml

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+---
+fixes:
+  - The new API documentation include fixes to the header like 'location',
+    'OpenStack-Request-Id' and responses during version negotiation.

releasenotes/notes/cluster-desired-capacity-d876347f69b04b4f.yaml

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+---
+fixes:
+  - The 'desired_capacity' reflects the expectation from a requester's view
+    point. The engine now changes the 'desired_capacity' after the request
+    is validated/sanitized, before the action is actually implemented. This
+    means the 'desired_capacity' will change event if an action fails.

releasenotes/notes/cluster-status-update-dd9133092aef05ab.yaml

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+---
+fixes:
+  - Fixed cluster status update logic so that cluster status is solely
+    determined by the status of its member nodes. The status is updated
+    each time a cluster operation has completed.

releasenotes/notes/compute-instance-fencing-63b931cdf35b127c.yaml

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+---
+features:
+  - The senlin-engine now supports fencing a corrupted VM instance by deleting
+    it forcibly.

releasenotes/notes/container-profile-152bf2908c70ffad.yaml

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+---
+features:
+  - A new profile type 'container.dockerinc.docker-1.0' is added to support
+    creation and management of docker clusters. This is still an experimental
+    feature. Please use with caution.

releasenotes/notes/health-manager-listener-8ddbe169e510031b.yaml

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+---
+features:
+  - The cluster health manager has gained a new feature where nova server
+    instance failures can be detected and handled, with and without a
+    health policy attached to a cluster.

releasenotes/notes/health-policy-properties-056d5b4aa63312c9.yaml

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+---
+fixes:
+  - The unimplemented properties for health policy are masked out.

releasenotes/notes/health-policy-suspend-7aa33fc981c0f2c9.yaml

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+---
+features:
+  - The health policy was improved so that it will suspend itself when
+    a node deletion comes from senlin-engine or client request. The policy
+    will only effect when node failure is 'unexpected'.

releasenotes/notes/lb-timeout-option-990ba1f359b5daab.yaml

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+---
+features:
+  - A new "lb_status_timeout" option is added to the LB policy to cope
+    with load-balancers that are not so responsive.

releasenotes/notes/nova-server-addresses-fd8afddc3fb36a0c.yaml

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+---
+upgrade:
+  - The 'details/addresses' property of a node output for a nova server used
+    to contain only some trimed information. This has been changed to a
+    faithful dumping of the 'addresses' property.

releasenotes/notes/nova-server-validation-d36dbcf64fb90a43.yaml

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+---
+features:
+  - With the new 'profile-validate' API, the nova server profile now supports
+    the validation of its 'flavor', 'image' (if provided), 'availability_zone'
+    and block device driver properties.

releasenotes/notes/policy-validate-04cbc74d2c025fcc.yaml

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+---
+features:
+  - A new policy-validate API has been added to validate the spec of a
+    policy without actually creating an instance of it.

releasenotes/notes/policy-validation-477a103aa83835f9.yaml

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+---
+features:
+  - The affinity policy, loadbalancing policy now support spec validation.
+    Invalid properties can be detected using policy-validate API.

releasenotes/notes/profile-validate-45a9bc520880bc6b.yaml

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+---
+features:
+  - A new profile-validate API has been added to validate the spec of a
+    profile without actually creating an instance of it.

releasenotes/notes/receiver-create-check-2225f536f5150065.yaml

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+---
+upgrade:
+  - With the newly added 'message' type of receivers, the 'cluster' and
+    the 'action' property are not always required when creating a receiver.
+    They are still required if the receiver type is 'webhook' (the default).

releasenotes/notes/service-status-report-625bc25b89907e07.yaml

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+---
+fixes:
+  - The 'senlin-manage' command has been fixed so that it will report the
+    senlin service status correctly.

releasenotes/notes/tools-setup-d73e3298328c5355.yaml

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+---
+fixes:
+  - The 'tools/setup-service' script has been fixed so that it works under
+    keystone v3.