Ignore error when adding indexer
Ignore error when adding indexer

Problem:
If a indexer already exists none of the controllers are registered so
clusterauthtokens do not get pushed downstream among other issues

Solution:
Ignore the indexer conflict error, this is expected after the first set
of controllers register.

cjellick/rancher,cjellick/rancher,rancher/rancher,cjellick/rancher,rancherio/rancher,rancher/rancher,rancher/rancher,rancher/rancher,rancherio/rancher