VPNaaS datamodel IKEPolicy lifetime unit typo

There was a typo in handling the IKEPolicy
lifetime, during the IKEPolicy creation time.

-Fixed the typo issue

Fixes bug 1207572

Change-Id: If8c56619c9a340a04e336b6b83d219df10b91e6c
Fix the alphabetical order in requirement files

Fix the alphabetical order in requirement files,
Bring into correspondence with other project,like
https://github.com/openstack/requirements/blob/ \
master/requirements.txt

Fixes bug #1207823

Change-Id: If70ff2a815343615870e54991aa0d3db3adc5147
Fix enum definition in FWaaS DB schema migration

Applying of migration 39cf3f799352 fails due to the error
in definiton of action Enum type (values are not passed).

Fixes bug 1207805

Change-Id: Ibfdc268b400433c9013ca4c475f6b1fa32d338fb
Fix typo in FK name in VPNaaS DB schema migration

Applying of migration 52ff27f7567a fails due to the typo
in a table name referenced by a FK ('ipsecsiteonnections'
instead of 'ipsec_site_connections').

Fixes bug 1207811

Change-Id: I9ee2933660c92d095db91003671478e691acecb1
Remove status* fields from HealthMonitor model

Status and status_description fields of HealthMonitor
model are never changed during lifetime of the object
and doesn't represent the status of it's pysical
implementation. Instead, status and status_description
of PoolMonitorAssociation is used. Another reason for
removing those fields is that HealthMonitor acts as
template which is instantiated on device. Status field
for template makes no sense.

fixes bug 1207650

Change-Id: Iea9d7f73c3a2db43c553ed06a64fe5ff42427167
Merge "Fix the alphabetical order in requirement files"
Merge "Fix enum definition in FWaaS DB schema migration"
Merge "Fix typo in FK name in VPNaaS DB schema migration"
Merge "Remove status* fields from HealthMonitor model"
Merge "VPNaaS datamodel IKEPolicy lifetime unit typo"