Remove obsolete Install Guide Networking files

Remove these unused files.

Change-Id: I8d6040a5aae39f29b835cdd4488055ac276c5881
Closes-Bug: #1323725
Fix procedure for Trove in Debian

The current procedure to install Trove doesn't take into
account that Debian uses debconf. This patch fixes that.

Change-Id: I7c605e653bde2dba8b35bf208794943116073b0b
Backport: icehouse
Remove ch_getstart from HA Guide

The getstart chapter was added during the splitup, I don't think we need
to add it in here at all. It's not common to have it.

This patch removes it again.

Change-Id: I27d9a64e01a1ea32fc9a2d1ffd6c0b5e17738055
Minor edits to the Image Service overview section

Minor edits to the wording in the Image Service overview.

Change-Id: I2c3771955d1d2c5814e757929734d43594dcc1dc
Implements: blueprint installation-guide-improvements
Merge "Minor edits to the Image Service overview section"
Merge "Fix procedure for Trove in Debian"
Merge "Remove obsolete Install Guide Networking files"
Merge "Remove ch_getstart from HA Guide"