Updating latest depencies

[nikhiljindal]

First commit auto generated by running glide update --strip-vendor.

Had to clear cache as per @G-Harmon's suggestion: https://github.com/Masterminds/glide/issues/592#issuecomment-344769706

Also removed the kubernetes pin that was added in https://github.com/GoogleCloudPlatform/k8s-multicluster-ingress/pull/93

Second commit is to fix the build using latest dependencies (renames and code moves). It has following changes that were required to fix the build:

• Rename ServicePort.Port to Nodeport: kubernetes/ingress-gce#128
• Update the return argument from ListGlobalForwardingRules to be []*ForwardingRule instead of ForwardingRuleList
• Update the import path for constants from ingress-gce like AppProtocol, ProtocolHTTP to be pkg/annotations instead of utils.
• Update the usage of annotations library from ingress-gce to use annotations.FromIngress(ing) instead of annotations.IngAnnotations(ing.ObjectMeta.Annotations) (similar change for services)

Trigger for getting latest change: https://github.com/kubernetes/ingress-gce/pull/169, https://github.com/kubernetes/ingress-gce/pull/165.

cc @G-Harmon @csbell @madhusudancs

[nikhiljindal]

Verified that go run test/e2e/e2e.go is still green with these changes :)

@madhusudancs Will be great if you can take a look since I am not sure if @csbell and @G-Harmon will get to.

[nikhiljindal]

To add more context, the second commit has following changes that were required to fix the build:

• Rename ServicePort.Port to Nodeport: https://github.com/kubernetes/ingress-gce/pull/128
• Update the return argument from ListGlobalForwardingRules to be []*ForwardingRule instead of ForwardingRuleList
• Update the import path for constants from ingress-gce like AppProtocol, ProtocolHTTP to be pkg/annotations instead of utils.
• Update the usage of annotations library from ingress-gce to use annotations.FromIngress(ing) instead of annotations.IngAnnotations(ing.ObjectMeta.Annotations) (similar change for services)

These are all due to changes to ingress-gce code that we are using.

[madhusudancs]

Thanks for the clarification. It would be great if you can copy that comment to your original PR description and/or the second commit so others who might have to bisect the commits get better visibility.

[madhusudancs]

/lgtm

[nikhiljindal]

Sure updated the PR description as well. Thanks!