The current `Kubernetes VIM installation` page has some
out-of-date instructions.
This patch replaces those out-of-date instructions with current
kubernetes manner, and fixes some other trivial mistakes
in the document.
Change-Id: I3d37aa215a9629f4ded92d0b4cb1b930658a2113
Signed-off-by: Masaki UENO <masaki.ueno.up@hco.ntt.co.jp>