oo-admin-ctl-routing: Print usage with no args

Print usage information and exit with exit code 0 if no arguments are
provided or if -h or --help is provided.

If an unrecognized argument is provided, print out the offending argument
and advise to run oo-admin-ctl-routing with the --help argument.

This commit fixes part 1 of bug 1169424.
oo-admin-ctl-routing usage info: Add missing "|"

Add a missing "|" delimiter"|" delimiter between "delete-monitor" and
"list-pool-members" in the usage information.

This commit fixes part 2 of bug 1169424.
oo-admin-ctl-routing: Fix list-monitors

Make oo-admin-ctl-routing properly handle the case where the routing
daemon's backend returns nil when the list of monitors is requested.

This commit fixes part 3 of bug 1169424.
oo-admin-ctl-routing: Add list-pool-aliases usage

Add list-pool-aliases to the usage information for oo-admin-ctl-routing.

This commit addresses part 4 of bug 1169424.
oo-admin-ctl-routing: Add list-aliases

Add the list-aliases subcommand to oo-admin-ctl-routing to list all aliases
of all pools.

This commit addresses part 4 of bug 1169424.
oo-admin-ctl-routing: Better usage output

Reformat the usage output for oo-admin-ctl-user to make it easier
to read and more complete.
Automatic commit of package [openshift-origin-cartridge-haproxy] release [1.28.3-1].
Automatic commit of package [openshift-origin-cartridge-jbossews] release [1.30.3-1].
Automatic commit of package [openshift-origin-cartridge-jenkins] release [1.26.3-1].
Automatic commit of package [rubygem-openshift-origin-controller] release [1.33.2-1].
Automatic commit of package [openshift-origin-cartridge-dependencies] release [1.27.2-1].
Automatic commit of package [rubygem-openshift-origin-routing-daemon] release [0.21.2-1].
Merge pull request #5992 from Miciah/bug-1169424-some-oo-admin-ctl-routing-tool-issues

Merged by openshift-bot
Make sure PHP 5.4 APC doesn't get obsoleted by APCu
Bug 1169306: Clean up standalone db gear http conf in watchman.
Merge pull request #5994 from VojtechVitek/php54-pecl

Merged by openshift-bot
Merge pull request #5995 from mrunalp/bug/1169306

Merged by openshift-bot
Automatic commit of package [openshift-origin-cartridge-dependencies] release [1.27.3-1].
Automatic commit of package [rubygem-openshift-origin-routing-daemon] release [0.21.3-1].
Automatic commit of package [openshift-origin-node-util] release [1.32.2-1].