CP and MP API Overrides from Config.json (#1992)

* Force useMongoProxyEndpoint to always return true if valid endpoint provided.  Enables new Mongo proxy in all environments.

* Checking MP endpoint in config context.

* Enabling cassandra proxy in all environments.  Requires later cleanup.

* Simplifying and removing endpoint validation since run when config context is generated.

* Enabling one MP API at a time globally.

* Revent to existing CP selection logic.

* Creating list of globally enable CP apis.

* Add list of mongo and cassandra APIs to config and only enable if environment outside existing list of environments.

* Remove environment checks.  If API globally enabled, return true.

* Adding config initialization for mongo unit tests.

* Default to empty enable list to minimize possible impact.  Config.json overrides can be used for testing.

src/ConfigContext.ts

@@ -67,6 +67,8 @@ export interface ConfigContext {
   hostedExplorerURL: string;
   armAPIVersion?: string;
   msalRedirectURI?: string;
+  globallyEnabledCassandraAPIs?: string[];
+  globallyEnabledMongoAPIs?: string[];
 }
 
 // Default configuration
@@ -114,6 +116,8 @@ let configContext: Readonly<ConfigContext> = {
   NEW_CASSANDRA_APIS: ["postQuery", "createOrDelete", "getKeys", "getSchema"],
   isTerminalEnabled: false,
   isPhoenixEnabled: false,
+  globallyEnabledCassandraAPIs: [],
+  globallyEnabledMongoAPIs: [],
 };
 
 export function resetConfigContext(): void {