Re-enable the dependencies of the spec file

RHEL 6.5 and CentOS 6.5 can satify the required dependencies by adding
the OpenStack related RPM packages. So I'm assuming we can just
re-enable the commented "Requires" section in the spec file.

This resolves MN1550.

Signed-off-by: Taku Fukushima <tfukushima@midokura.com>
My Python Midonet Client scripts.
Merge pull request #154 from tomohikokimura/dev/tomohiko/my-scripts/20140428

My Python Midonet Client scripts.
Merge pull request #151 from tfukushima/spec-dependencies-master

Re-enable the dependencies of the spec file
Adds Vtep and VtepBinding to Python Client / CLI.

- Adds Vtep and VtepBinding, wrapper classes for corresponding Midonet
  API DTOs.
- At the moment, all it can do is:
  1) to create a VTEP,
  2) list VTEPS,
  3) add a VTEP binding.
- Also implemented CLI.

Sample code fragment:

  # Create a new VTEP
  # vtep_management_ip/port are assumed to contain right values.
  vtep = mc.add_vtep().name('My VTEP').management_ip(vtep_management_ip).management_port(vtep_management_port).create()

  # Add a new VTEP binding.
  # bridge_id is assumed to contain a correct Mido bridge ID.
  vtep_binding = vtep.add_binding().port_name('in1').network_id(bridge_id).create()

Sample CLI inputs:
  create vtep management-ip 119.15.112.22 management-port 6633 name 'my cli vtep'
  vtep management-ip 119.15.112.22 add binding port-name in1 vlan-id 127 network-id 9fdab92a-07ff-4616-95f4-ce53cc3f2d3f

Fix MN-1586