CLOUDSTACK-681: Dedicated Resources - Explicit Dedication, Private zone, pod, cluster or host. <Patch1>

This feature allows a user to deploy VMs only in the resources dedicated to his account or domain.

1. Resources(Zones, Pods, Clusters or hosts) can be dedicated to an account or domain.
   Implemented 12 new APIs to dedicate/list/release resources:
   - dedicateZone, listDedicatedZones, releaseDedicatedZone for a Zone.
   - dedicatePod, listDedicatedPods, releaseDedicatedPod for a Pod.
   - dedicateCluster, listDedicatedClusters, releaseDedicatedCluster for a Cluster
   - dedicateHost, listDedicatedHosts, releaseDedicatedHost for a Host.
2. Once a resource(eg. pod) is dedicated to an account, other resources(eg. clusters/hosts) inside that cannot be further dedicated.
3. Once a resource is dedicated to a domain, other resources inside that can be further dedicated to its sub-domain or account.
4. If any resource (eg.cluster) is dedicated to a account/domain, then resources(eg. Pod) above that cannot be dedicated to different accounts/domain (not belonging to the same domain)
5. To use Explicit dedication, user needs to create an Affinity Group of type 'ExplicitDedication'
6. A VM can be deployed with the above affinity group parameter as an input.
7. A new ExplicitDedicationProcessor has been added which will process the affinity group of type 'Explicit Dedication' for a deployment of a VM that demands dedicated resources.
   This processor implements the AffinityGroupProcessor adapter. This processor will update the avoid list.
8. A VM requesting dedication will be deployed on dedicatd resources if available with the user account.
9. A VM requesting dedication can also be deployed on the dedicated resources available with the parent domains iff no dedicated resources are available with the current user's account or
   domain.
10. A VM (without dedication) can be deployed on shared host but not on dedicated hosts.
11. To modify the dedication, the resource has to be released first.
12. Existing Private zone functionality has been redirected to Explicit dedication of zones.
13. Updated the db upgrade schema script. A new table "dedicated_resources" has been added.
14. Added the right permissions in commands.properties
15. Unit tests:  For the new APIs and Service, added unit tests under : plugins/dedicated-resources/test/org/apache/cloudstack/dedicated/DedicatedApiUnitTest.java
16. Marvin Test: To dedicate host, create affinity group, deploy-vm, check if vm is deployed on the dedicated host.
Patch 2: CLOUDSTACK-681: Dedicated Resources - Explicit Dedication, Private zone, pod, cluster or host

Patch 2 for https://reviews.apache.org/r/11379/
Created for files server/src/com/cloud/deploy/DeploymentPlanningManagerImpl.java, server/test/com/cloud/vm/DeploymentPlanningManagerImplTest.java, server/test/org/apache/cloudstack/affinity/AffinityApiUnitTest.java