changing to only doing code coverage on one test run (Azure#16297)

Author: seankane-msft

sdk/eventhub/tests.yml

@@ -7,25 +7,25 @@ jobs:
       ServiceDirectory: eventhub
       Matrix:
         Linux_Python35:
-          Pool: azsdk-pool-mms-ubuntu-1804-general          
+          Pool: azsdk-pool-mms-ubuntu-1804-general
           OSVmImage: MMSUbuntu18.04
           PythonVersion: '3.5'
           CoverageArg: '--disablecov'
         Linux_Python39:
-          Pool: azsdk-pool-mms-ubuntu-1804-general          
+          Pool: azsdk-pool-mms-ubuntu-1804-general
           OSVmImage: MMSUbuntu18.04
           PythonVersion: '3.9'
           CoverageArg: ''
         Windows_Python27:
-          Pool: azsdk-pool-mms-win-2019-general          
+          Pool: azsdk-pool-mms-win-2019-general
           OSVmImage: MMS2019
           PythonVersion: '2.7'
           CoverageArg: '--disablecov'
         MacOs_Python37:
           Pool: Azure Pipelines
           OSVmImage: 'macOS-10.15'
           PythonVersion: '3.7'
-          CoverageArg: ''
+          CoverageArg: '--disablecov'
       EnvVars:
         AZURE_STORAGE_ACCOUNT: $(python-eh-livetest-event-hub-storage-account)
         AZURE_STORAGE_ACCESS_KEY: $(python-eh-livetest-event-hub-storage-access-key)