Add ipv4 column in endpoint table.
Add ipv4 column in endpoint table.

Cepave/open-falcon-backend,masato25/open-falcon-backend,masato25/open-falcon-backend,Cepave/open-falcon-backend,Cepave/scripts,Cepave/open-falcon-backend,masato25/open-falcon-backend,Cepave/open-falcon-backend,masato25/open-falcon-backend,masato25/open-falcon-backend,Cepave/scripts,minimum-hsu/scripts,Cepave/open-falcon-backend,minimum-hsu/scripts,masato25/open-falcon-backend,Cepave/open-falcon-backend