ci: use qemu for arm targets

Author: deepak1556

azure-pipelines.yml

@@ -188,6 +188,7 @@ stages:
           - template: build-containers.yml
             parameters:
               arch: centos7-devtoolset8-arm64
+              qemu: 'true'
               release: ${{ parameters.dockerhub_release }}
 
       - job: bionic_armhf
@@ -197,4 +198,5 @@ stages:
           - template: build-containers.yml
             parameters:
               arch: bionic-arm32v7
+              qemu: 'true'
               release: ${{ parameters.dockerhub_release }}