Updating dependencies - Fixing Channels

[nachocano]

Proposed Changes

• Updated knative.dev/pkg, knative.dev/eventing, knative.dev/serving
• pkg needed some newer k8s.io/client-go, which we were overriding to 1.12. I ended up increasing all k8s.io deps to kubernetes-1.15.3, to match eventing, serving, and pkg.
• With the newer k8s.io, also needed to update controller-runtime (to 0.2.2). I had to do a changes in testing code, and some other client calls, due to this change.
• Moving message_dispatcher and message_receiver to eventing-contrib in order not to break the NATSS nor the Kafka channels whenever we updated the dep to eventing. There are TODOs in the code with links to issues of what should be removed once we start using event_receiver and event_dispatcher from eventing.
• Few nits (couchdb controller needed configmaps permissions, added URL to printed columns, code-gen for channels, etc, etc.)

NOTE for the Reviewer(s):

• Don't be scared about the amount of files changed. They are mostly vendored :)
• Applied everything (githubsource, awssqssource, camel, couchdbsource, kafkasource, kafkachannel, and natsschannel), and all controllers started.
• Tested the kafka and natss channels data planes and I was able to see events flowing.
• This will have to be done for the 0.10 cut, so let's do it soon in case there are any issues...

Release Note

NONE

[nachocano]

/hold cancel
doing the patching that eventing does for now

[nachocano]

/hold dumping logs

[knative-metrics-robot]

The following is the coverage report on the affected files.
Say /test pull-knative-eventing-contrib-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
camel/source/pkg/reconciler/camelsource.go	61.4%	61.1%	-0.3
github/pkg/reconciler/githubsource.go	85.6%	85.7%	0.1
kafka/source/pkg/reconciler/kafkasource.go	84.0%	84.1%	0.2
pkg/channel/message.go	Do not exist	50.0%
pkg/channel/message_dispatcher.go	Do not exist	86.6%
pkg/channel/message_receiver.go	Do not exist	74.3%

[knative-metrics-robot]

The following is the coverage report on the affected files.
Say /test pull-knative-eventing-contrib-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
camel/source/pkg/reconciler/camelsource.go	61.4%	61.1%	-0.3
github/pkg/reconciler/githubsource.go	85.6%	85.7%	0.1
kafka/source/pkg/reconciler/kafkasource.go	84.0%	84.1%	0.2
pkg/channel/message.go	Do not exist	50.0%
pkg/channel/message_dispatcher.go	Do not exist	86.6%
pkg/channel/message_receiver.go	Do not exist	74.3%

[knative-metrics-robot]

The following is the coverage report on the affected files.
Say /test pull-knative-eventing-contrib-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
camel/source/pkg/reconciler/camelsource.go	61.4%	61.1%	-0.3
github/pkg/reconciler/githubsource.go	85.6%	85.7%	0.1
kafka/source/pkg/reconciler/kafkasource.go	84.0%	84.1%	0.2
pkg/channel/message.go	Do not exist	50.0%
pkg/channel/message_dispatcher.go	Do not exist	86.6%
pkg/channel/message_receiver.go	Do not exist	74.3%

[nachocano]

/hold

[nachocano]

/hold cancel

we are skipping the two e2e tests failing for now. Created an issue #639 to unblock us.... We narrowed it down to a particular PR in eventing, which we will continue to investigate...

fyi @chizhg @Harwayne

[knative-metrics-robot]

The following is the coverage report on the affected files.
Say /test pull-knative-eventing-contrib-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
camel/source/pkg/reconciler/camelsource.go	61.4%	61.1%	-0.3
github/pkg/reconciler/githubsource.go	85.6%	85.7%	0.1
kafka/source/pkg/reconciler/kafkasource.go	84.0%	84.1%	0.2
pkg/channel/message.go	Do not exist	50.0%
pkg/channel/message_dispatcher.go	Do not exist	86.6%
pkg/channel/message_receiver.go	Do not exist	74.3%

[chizhg]

/lgtm