lzhecheng: Cherry-pick armclients 1.0

JobBuild
1730
05-16 01:11
pull-cloud-provider-azure-check-1-21 1526007400513933312
pull-cloud-provider-azure-e2e-capz-1-21 1526007400639762432
pull-cloud-provider-azure-e2e-ccm-capz-1-21 1526007400677511168 1526038211904671744
pull-cloud-provider-azure-e2e-ccm-vmss-1-21 1526037403586793472 1526007400606208000
pull-cloud-provider-azure-e2e-ccm-vmss-basic-lb-1-21 1526007400555876352
pull-cloud-provider-azure-unit-1-21 1526007400711065600