Add docs for airgap/offline deployment of Che#868

Merged

rkratky merged 4 commits intoeclipse-che:masterfrom amisevsk:airgap-docs

Nov 6, 2019

+226

Commits on Oct 24, 2019

Commits on Nov 5, 2019

File renames, language, formatting fixes.

Robert Krátký
authored and
amisevsk
committed