Set the CA field if a non-nil ca cert is passed
Set the CA field if a non-nil ca cert is passed

Signed-off-by: Max Ehrlich <c7cd0513ef0c504f678ca33c2b168f4f84cd4d51@gmail.com>

cert-manager/cert-manager,jetstack-experimental/cert-manager,jetstack/cert-manager,cert-manager/cert-manager,cert-manager/cert-manager,jetstack/cert-manager,jetstack-experimental/cert-manager,jetstack-experimental/cert-manager,jetstack/cert-manager