[connman] Cancel browser requests if useragent has not returned anything

When succesfully in online-state, we do not need to wait for the useragent
to return anything.
Merge pull request #173 from tigeli/cancelagent

[connman] Cancel browser requests if useragent has not returned anything
Merge branch 'master' of https://github.com/mer-packages/connman into ipv6plugin
Revert "[connman] introduce: retrieve inet6 interface name and index"

This reverts commit e4b11e641a882cdf8f5b4a5b1bfea799ad3e3307.
Revert "[connman] implement retrieve inet6 interface name and index"

This reverts commit 94459075bcade7ada0796053fc5a3e864afa6cb6.
Revert "[connman] dnsproxy: fetch inet6 ifname if AF_INET6"

This reverts commit 908a37aae1bbada373ef2d518cc659e0be1ce2af.