oo-accept-node: Simplify find_ext_net_dev

The node runtime simply defaults to eth0 if EXTERNAL_ETH_DEV is not set,
so make oo-accept-node do the same for consistency.
oo-accept-node: Use OpenShift::Config

Use OpenShift::Config to load and parse node.conf and resource_limits.conf
for consistency with the node runtime.

Use OpenShift::Config::NODE_CONF_FILE instead of defining NODE_CONF_FILE in
oo-accept-node.

Use the new globals $CONF and $RESOURCE_LIMITS instead of ENV for storing
the settings read from node.conf and resource_limits.conf.
Bug 997129 - oo-last-access script chokes on /etc/openshift/node.conf with only space in configuration line
<broker> Fix problem with plugin loading from source
fix up some docs reported by community members

fix typo for RHEL vs Fedora
Upgrade tool enhancements

Enhance the `oo-admin-upgrade` script to provide a more usable workflow and persist structured
data for all upgrade operations. The `--continue` and `--rerun` flags have been removed; the
script now has two commands, `upgrade-gear` and `upgrade-node`. The latter has no modes: the
command can be run repeatedly until the upgrade is a success. The script also contains a small
Ruby API for dealing with the result data. See the class documentation for details.

Implement Trello card: https://trello.com/c/blIfAdai/207-3-upgrade-analysis-app (online_runtime_207)

Resolve bugs:

  * Bug 997047
  * Bug 994614
  * Bug 994709
  * Bug 997075
Fix calculation.
Merge pull request #3360 from brenton/BZ997129

Merged by openshift-bot
Bug 977928 - node-util scripts missing man pages
Merge pull request #3361 from sosiouxme/broker-source

Merged by openshift-bot
Bug 991362 - remove processing listing from haproxy control#status
Add CA setting for node web proxy.
Bug 968280 - Ensure Stopping/Starting messages during git push
Bug 983014 -  Unnecessary messages from mongodb cartridge
Merge pull request #3346 from maxamillion/admiller/doc_fixes

Merged by openshift-bot
Merge pull request #3362 from ironcladlou/dev/upgrade_analysis

Merged by openshift-bot
Merge pull request #3363 from mrunalp/bugs/996948

Merged by openshift-bot
Merge pull request #3364 from jwhonce/bug/977928

Merged by openshift-bot
Unable to scale up or snapshot an app

Application.find_by_user is broken, add test and correct it.
Merge pull request #3366 from jwhonce/bug/991362

Merged by openshift-bot
Merge pull request #3367 from mrunalp/bugs/997108

Merged by openshift-bot