Fixes #1898: Proposal: move downloader and resolver package to /pkg

feat(kube): support third party resources

docs(related): add Drone Helm plugin

fix(*): Regenerates protobuf files for protobuf 3.2

Protobuf 3.2 was recently released and generates a slightly different
file from the protobuf definitions. These were all changes to the
autogenerated byte array.

feat(cmd/helm/status): add last test suite run to status output

Add linux/ppc64le to build-cross target

move newTillerPortForwarder to pkg/helm/portforwarder

fix(helm): delete outdated deps

feat(*): add helm test initial framework

fix(helm): fix broken unit test

I recently added a test to check the sorting of search results.
Unfortunately, the test didn't actually sort the results (_sigh_), so
it was failing occasionally on map ordering.

This adds the sort function that is supposed to be tested.

Closes #1925

docs(helm): add doc to use `helm reset` to delete tiller deployment

Closes #1921

* also cleanup comments

(bugfix/cmd/helm/history): update history table MaxColWidth

list command

ref(hapi): remove never used proto field

This fixes a bug in 'helm dep up' which left old versions of a
dependency after an update.

Closes #1864

fix(helm) add missing manifest header for `helm init --dry-run --debug`

fix(helm): fix 'helm dep up' to fetch by URL

docs(install_faq): document the Docker media type bug

Closes #1824

fix(helm): fix sort order on helm search

* and comments

add PersistentVolumeClaim to the kind sorter list

At the present time, PersistentVolumeClaims are not a recognized object so it is installed last.
PVCs should be installed shortly after PersistentVolumes have been bound.

feat(README): Adding roadmap location

To exit incubation the roadmap needs to be listed in the wiki per
the incubator documentation. For more detail see
https://github.com/kubernetes/community/blob/master/incubator.md