Add info on creating a tftp map file

This add instructions on how to create a tftp map file to the
install-guide. Also remove hard coded section numbers from iPxe
section.

Partial-Bug: #1323589
Change-Id: I0b5c36246f9170c512172929819b7d6a487804f4
Updated from global requirements

Change-Id: Id380d4d5fbb606728ec7ffbc34801958b0721a33
Fix for broken deploy of iscsi_ilo driver

This commit fixes the issue that iscsi_ilo driver fails
during deploy while creating the bootable ISO image.

Change-Id: Ib265fa49a0601985793c0f9cb1f394d05496958b
Closes-Bug: 1399522
Add tests to iscsi_deploy.build_deploy_ramdisk_options

The build_deploy_ramdisk_options() from the iscsi_deploy.py module had
no unittests, this patch is adding it.

Also this patch simplify a little the tests for
the pxe.build_pxe_config_options() by mocking
iscsi_deploy.build_deploy_ramdisk_options().

Change-Id: I7422027f8d65541cd4ca28b11df1d2a219152b88
Merge "Add tests to iscsi_deploy.build_deploy_ramdisk_options"
Workflow documentation is now in infra-manual

Replace URLs for workflow documentation to appropriate parts of the
OpenStack Project Infrastructure Manual.

Dropped sections that duplicate each other after the change.

Co-Authored-By: Dmitry Tantsur <dtantsur@redhat.com>
Change-Id: I233df03368dbb4b7805d6dce28de00fa037353c7
Merge "Workflow documentation is now in infra-manual"
Merge "Fix for broken deploy of iscsi_ilo driver"