API layer documentation

* Discuss the WSGI layer of Neutron
* Describe the startup code that creates the WSGI application
* Briefly discuss the URL routing and resource creation

Change-Id: Id82a2a5679d7e29c0a19d1a20942a9249946b011
BigSwitch: Watchdog thread start after servers

Start the watchdog thread after the servers have
been initialized.

Closes-Bug: #1293799
Change-Id: Ic7ae1f55bd7faed6edde84d9d0b52fc8fe7a1fc1
Add session persistence support for NVP advanced LBaaS

Change-Id: I2042894755cdaf54b2bc39e58028746aa7c1e8ea
Closes-Bug: #1256243
Show neutron API request body with debug enabled

Shows the contents of update and create requests
to the neutron API when debugging is enabled.

Closes-Bug: #982504
Change-Id: I90680721aee9efbcb01779cdfacc86b90b37bf8f
Imported Translations from Transifex

Change-Id: I2e20faef71a104c1a58f20b9c0d8a14ed388a330
Change report_interval from 4 to 30, agent_down_time from 9 to 75

report_interval is how often an agent sends out a heartbeat to the
service. The Neutron service responds to these 'report_state' RPC
messages by updating the agent's heartbeat DB record.
The last heartbeat is then compared to the configured
agent_down_time to determine if the agent is up or down.
The agent's status is used when scheduling networks on DHCP
and L3 agents.

In the spirit of sane defaults suited for production, these values
should be bumped to reduce the load on the Neutron service
dramatically, freeing up CPU time to perform intensive operations.

DocImpact
Closes-Bug: #1293083
Change-Id: I77bcf8f66f74ba55513c989caead1f96c92b9832
Don't use root to list namespaces

A bit of low hanging fruit.  I just noticed that this hadn't been
fixed yet.

Change-Id: Iea9210098b6acf4ab24a89287529ff82986faaad
Closes-Bug: #1293818
Merge "BigSwitch: Watchdog thread start after servers"
Merge "Add session persistence support for NVP advanced LBaaS"
Merge "API layer documentation"
Merge "Show neutron API request body with debug enabled"
Merge "Imported Translations from Transifex"
Merge "Change report_interval from 4 to 30, agent_down_time from 9 to 75"
Merge "Don't use root to list namespaces"