CDRIVER-1972 Support for ipv6 hostnames
CDRIVER-1972 Support for ipv6 hostnames

For cases when connection endpoint specified as hostname with ipv6
address only.

bjori/mongo-c-driver,malexzx/mongo-c-driver,bjori/mongo-c-driver,beingmeta/mongo-c-driver,ajdavis/mongo-c-driver,remicollet/mongo-c-driver,rcsanchez97/mongo-c-driver,derickr/mongo-c-driver,mongodb/mongo-c-driver,rcsanchez97/mongo-c-driver,acmorrow/mongo-c-driver,remicollet/mongo-c-driver,remicollet/mongo-c-driver,bjori/mongo-c-driver,ajdavis/mongo-c-driver,derickr/mongo-c-driver,jmikola/mongo-c-driver,mongodb/mongo-c-driver,remicollet/mongo-c-driver,mongodb/mongo-c-driver,bjori/mongo-c-driver,derickr/mongo-c-driver,acmorrow/mongo-c-driver,jmikola/mongo-c-driver,derickr/mongo-c-driver,remicollet/mongo-c-driver,ajdavis/mongo-c-driver,acmorrow/mongo-c-driver,jmikola/mongo-c-driver,bjori/mongo-c-driver,rcsanchez97/mongo-c-driver,beingmeta/mongo-c-driver,ajdavis/mongo-c-driver,mschoenlaub/mongo-c-driver,mschoenlaub/mongo-c-driver,acmorrow/mongo-c-driver,mschoenlaub/mongo-c-driver,derickr/mongo-c-driver,beingmeta/mongo-c-driver,bjori/mongo-c-driver,rcsanchez97/mongo-c-driver,ajdavis/mongo-c-driver,rcsanchez97/mongo-c-driver,jmikola/mongo-c-driver,acmorrow/mongo-c-driver,rcsanchez97/mongo-c-driver,ajdavis/mongo-c-driver,bjori/mongo-c-driver,beingmeta/mongo-c-driver,jmikola/mongo-c-driver,derickr/mongo-c-driver,mongodb/mongo-c-driver,jmikola/mongo-c-driver,malexzx/mongo-c-driver,beingmeta/mongo-c-driver,mongodb/mongo-c-driver,derickr/mongo-c-driver,mongodb/mongo-c-driver,ajdavis/mongo-c-driver,jmikola/mongo-c-driver,remicollet/mongo-c-driver,remicollet/mongo-c-driver,beingmeta/mongo-c-driver,acmorrow/mongo-c-driver,mschoenlaub/mongo-c-driver,malexzx/mongo-c-driver,malexzx/mongo-c-driver,mongodb/mongo-c-driver,acmorrow/mongo-c-driver,beingmeta/mongo-c-driver,beingmeta/mongo-c-driver,rcsanchez97/mongo-c-driver