[Deprecation] Deprecate cat master API in favor of cat cluster_manager

[tmarkley]

Parent: #1318

Instances of cat master

OpenSearch-Dashboards/src/core/server/server.api.md

Line 1045 in 1caf907

(endpoint: 'cat.master', params: CatCommonParams, options?: LegacyCallAPIOptions): ReturnType<Client['cat']['master']>;

OpenSearch-Dashboards/src/core/server/opensearch/legacy/api_types.ts

Line 234 in 1caf907

(endpoint: 'cat.master', params: CatCommonParams, options?: LegacyCallAPIOptions): ReturnType<Client['cat']['master']>;

OpenSearch-Dashboards/src/plugins/console/server/lib/spec_definitions/json/generated/cat.master.json

Lines 2 to 18 in 1caf907

	"cat.master": {
	"url_params": {
	"format": "",
	"local": "__flag__",
	"master_timeout": "",
	"h": [],
	"help": "__flag__",
	"s": [],
	"v": "__flag__"
	},
	"methods": [
	"GET"
	],
	"patterns": [
	"_cat/master"
	],
	"documentation": "https://opensearch.org/docs/latest/opensearch/rest-api/cat/cat-master/"