sync aws-vpc-cni helmCharts from master (aws#1507)

Release artifacts for v1.7.10 (aws#1408)

changelog and config file changes for rel 1.7.10-rc1 (aws#1406)

Configuration update to v1.7.9 (aws#1383)

Adds config files for v1.7.9-rc1 (aws#1378)

configuration update to v1.7.8 (aws#1335)

* configuration update to v1.7.8

* revert calico change in v1.7.8

Release v1.7.7 in Github

Update image version for rel 1.7.6

CNI release 1.7.5

Update configs and changelog for v1.7.4