[management] split management api

[mikz]

follow up #275

split the Management API into two parts: status and debug

debug includes status and all other endpoints status includes just /status/ endpoints

fixes https://issues.jboss.org/browse/THREESCALE-71
fixes https://issues.jboss.org/browse/THREESCALE-69

there is number of other issues with the Management API and why it shouldn't be open by default:
https://issues.jboss.org/browse/THREESCALE-70

[octobot]

Proselint found issues

doc/parameters.md

Line	Message	Severity

Spell Checker found issues

doc/parameters.md

Line	Typo
3	APIcast v2 has a number of parameters co
3	variables that can modify the behavior of the gateway. The following
5	e that when deploying APIcast v2 with OpenShift, some of thee
12	Default: **stderr**
17	nfo
17	warn
29	Default: "apicast"
74	Values: a number > **60**
75	Default: 0
77	value should be set more than 60. For example, if `AUTO_UPDATE
77	TO_UPDATE_INTERVAL` is set to 120, the gateway will reload the
77	eload the configuration every 2 minutes (120 seconds).
77	onfiguration every 2 minutes (120 seconds).
80	Default: "127.0.0.1"
82	ning Redis instance for OAuth 2.0 flow. REDIS_HOST parameter
85	Default: 6379
87	ning Redis instance for OAuth 2.0 flow. REDIS_PORT parameter
91	pty, the DNS resolver will be autodiscovered.

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