Add: flask api include resource type, resource pool, resource and deployment manager

Add: flask api include resource type, resource pool, resource and deployment manager

1. Create all metadata with mapper while execute start_o2ims_mappers()
2. Extend domain class parameters and create subscription class
3. Create repository class of resource type, resource pool and resource
4. Add flask API to get the list or specific one through the view level

Change-Id: Id29b10172712c19cbfef57e6e74cd4bb85ad15eb
Signed-off-by: Zhang Rong(Jon) <rong.zhang@windriver.com>