cherry-pick and changelog update 0.7.0-rc.7

Signed-off-by: Santhosh Manohar <[email protected]>

changelog for 0.8.0-dev.1

Signed-off-by: Madhu Venugopal <[email protected]>

Merge pull request moby#1098 from sanimej/release/v0.7

Cherry-pick and changelog for v0.7.0-rc.6

Merge pull request moby#1092 from sanimej/release/v0.7

Cherry-pick and changelog for v0.7.0-rc.5

Merge pull request moby#1081 from aboch/release/v0.7

Cherry-pick and changelog for v0.7.0.rc.4

Cherry-pick and changelog update for 0.7.0-rc.3

Signed-off-by: Santhosh Manohar <[email protected]>

Merge pull request moby#1075 from sanimej/release/v0.7

Cherry-pick and changelog update for 0.7.0-rc.2

Merge pull request moby#1066 from mavenugo/release/v0.7

changelog for 0.7.0-rc.1

Merge pull request moby#1066 from mavenugo/release/v0.7

changelog for 0.7.0-rc.1

Merge pull request moby#1042 from sanimej/fixes

Changelog for v0.7.0-dev.10