BUG/MINOR: Use slice instead of static sized arrays

Since whitelisted namespaces were being appended anyways, the first entries in the
namespaces were all empty strings thus causing ingress controller to access
k8s resources on a cluster level unnecessary.

Signed-off-by: Daniel Lenar <dlenar@vailsys.com>

controller/monitor.go

@@ -193,8 +193,7 @@ func (c *HAProxyController) getWhitelistedNamespaces() []string {
 	if len(c.Store.NamespacesAccess.Whitelist) == 0 {
 		return []string{""}
 	}
-	// Add one because of potential whitelisting of configmap namespace
-	namespaces := make([]string, len(c.Store.NamespacesAccess.Whitelist)+1)
+	namespaces := []string{}
 	for ns := range c.Store.NamespacesAccess.Whitelist {
 		namespaces = append(namespaces, ns)
 	}