(maint) Update test checking feature compatibility

SSMS is installed separately starting with SQL Server 2016. Update
a test to omit SSMS from feature support checks from 2016 and
newer, rather than only 2016. See also MODULES-6585.

Author: gguillotte

spec/acceptance/z_last_sqlserver_features_spec.rb

@@ -82,7 +82,7 @@ def ensure_sql_features(features, ensure_val = 'present')
   end
 
   context 'can remove independent feature' do
-    if sql_version == '2016'
+    if sql_version.to_i >= 2016
       all_possible_features = ['BC', 'Conn', 'SDK', 'IS', 'MDS', 'DQC']
       features = ['BC', 'Conn', 'SDK', 'IS', 'MDS', 'DQC']
     else