Reschedule router if new external gateway is on other network

An L3 agent may be associated with just one external network.
If router's new external gateway is on other network then the router
needs to be rescheduled to the proper l3 agent

Change-Id: Ia0ed924403137ac4578ca562b57988292c41c1fe
Closes-Bug: #1234750
Allow combined certificate/key files for SSL

Allows the ssl_key_file parameter to be excluded
during SSL operation to support combined certificate/key files.

Closes-Bug: #1303312
Change-Id: Ied5c7a7657e0e26eda31305fc96104c6593e9593
Add nova_api_insecure flag to neutron

Neutron did not have any way to allow SSL validation problems in the
novaclient similar to the way nova has the neutron_api_insecure flag.
This change adds the nova_api_insecure flag to the neutron config and
also passes it in the novaclient instantiation.

Change-Id: Ifed581df253c01fab9dc1f22c8187876271b378e
Closes-Bug: #1306822
Fix LBaaS Haproxy occurs error if no member is added

If no member is added and session_persistence.type=HTTP_COOKIE,
haproxy agent would not add cookie persistence option to the backend.
Closes-Bug: #1302283

Change-Id: Ifa2564df924c2555225a749a99c705b3f1caab4a
Merge "Reschedule router if new external gateway is on other network"
Merge "Add nova_api_insecure flag to neutron"
Merge "Fix LBaaS Haproxy occurs error if no member is added"
Merge "Allow combined certificate/key files for SSL"