Fix Bashate E043 - Arithmetic compound has inconsistent return semantics
Fix Bashate E043 - Arithmetic compound has inconsistent return semantics

Change ((RETRY++)) to $((RETRY++)) to fix bashate E043 errors.

Change-Id: I1d7f96a4d743871f6afa4bc971219a5d427cb49b

BjoernT/openstack-ansible,BjoernT/os-ansible-deployment,cfarquhar/openstack-ansible,yanyao/newton,stackforge/os-ansible-deployment,os-cloud/os-ansible-deployment,openstack/openstack-ansible,major/openstack-ansible,yanyao/openstack-ansible,openstack/openstack-ansible,Logan2211/openstack-ansible,BjoernT/openstack-ansible,mancdaz/openstack-ansible,BjoernT/os-ansible-deployment,os-cloud/os-ansible-deployment,weezer/openstack-ansible,Logan2211/openstack-ansible,major/openstack-ansible,BjoernT/os-ansible-deployment,bunchc/openstack-ansible,mancdaz/openstack-ansible,cfarquhar/openstack-ansible,cloudnull/os-ansible-deployment,robb-romans/openstack-ansible,weezer/openstack-ansible,robb-romans/openstack-ansible,cloudnull/os-ansible-deployment,major/os-ansible-deployment,yanyao/newton,mrda/openstack-ansible,bunchc/openstack-ansible,stackforge/os-ansible-deployment,major/os-ansible-deployment,mrda/openstack-ansible,mrda/openstack-ansible,yanyao/openstack-ansible