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

* Update extensions to use azdata

* Switch core code to use azdata

src/sql/platform/connection/common/iconnectionConfig.ts

@@ -8,7 +8,7 @@
 import { IConnectionProfile } from './interfaces';
 import { IConnectionProfileGroup, ConnectionProfileGroup } from './connectionProfileGroup';
 import { ConnectionProfile } from './connectionProfile';
-import * as sqlops from 'sqlops';
+import * as azdata from 'azdata';
 
 /**
  * Interface for a configuration file that stores connection profiles.