Update base.py (#7801)

tools/azure-devtools/src/azure_devtools/scenario_tests/base.py

@@ -126,7 +126,10 @@ class ReplayableTest(IntegrationTestBase):  # pylint: disable=too-many-instance-
 
     def setUp(self):
         super(ReplayableTest, self).setUp()
-
+    
+        if os.environ.get('AZURE_SKIP_LIVE_RECORDING', '').lower() == 'true':
+            return
+            
         # set up cassette
         cm = self.vcr.use_cassette(self.recording_file)
         self.cassette = cm.__enter__()