Update product references from 'sqlops' to 'azdata' (#4259)

* Update extensions to use azdata

* Switch core code to use azdata

extensions/mssql/src/credentialstore/contracts.ts

@@ -5,7 +5,7 @@
 'use strict';
 
 import { RequestType } from 'vscode-languageclient';
-import { Credential } from 'sqlops';
+import { Credential } from 'azdata';
 
 // --------------------------------- < Read Credential Request > -------------------------------------------------
 

extensions/mssql/src/credentialstore/credentialstore.ts

@@ -10,7 +10,7 @@ import { IConfig, ServerProvider } from 'service-downloader';
 import { ServerOptions, RPCMessageType, ClientCapabilities, ServerCapabilities, TransportKind } from 'vscode-languageclient';
 import { Disposable } from 'vscode';
 import * as UUID from 'vscode-languageclient/lib/utils/uuid';
-import * as sqlops from 'sqlops';
+import * as azdata from 'azdata';
 
 import * as Contracts from './contracts';
 import * as Constants from './constants';
@@ -42,7 +42,7 @@ class CredentialsFeature extends SqlOpsFeature<any> {
 	protected registerProvider(options: any): Disposable {
 		const client = this._client;
 
-		let readCredential = (credentialId: string): Thenable<sqlops.Credential> => {
+		let readCredential = (credentialId: string): Thenable<azdata.Credential> => {
 			return client.sendRequest(Contracts.ReadCredentialRequest.type, { credentialId });
 		};
 
@@ -54,7 +54,7 @@ class CredentialsFeature extends SqlOpsFeature<any> {
 			return client.sendRequest(Contracts.DeleteCredentialRequest.type, { credentialId });
 		};
 
-		return sqlops.credentials.registerProvider({
+		return azdata.credentials.registerProvider({
 			deleteCredential,
 			readCredential,
 			saveCredential,