corrected the regular expression

Author: JacobTanenbaum

images/router/haproxy/conf/haproxy-config.template

@@ -227,7 +227,7 @@ backend be_edge_http_{{$cfgIdx}}
   balance leastconn
     {{ end }}
     {{ with $value := index $cfg.Annotations "router.openshift.io/haproxy.timeout"}}
-      {{if (matchString "[0-9]*(us|ms|s|m|h|d)?" $value) }}
+      {{if (matchString "^[1-9][0-9]*(us|ms|s|m|h|d)?$" $value) }}
   timeout server  {{$value}}
       {{ end }}
     {{ end }}
@@ -265,7 +265,7 @@ backend be_tcp_{{$cfgIdx}}
   balance {{ env "ROUTER_TCP_BALANCE_SCHEME" "source" }}
     {{ end }}
     {{ with $value := index $cfg.Annotations "router.openshift.io/haproxy.timeout"}}
-      {{if (matchString "[0-9]*(us|ms|s|m|h|d)?" $value) }}
+      {{if (matchString "^[1-9][0-9]*(us|ms|s|m|h|d)?$" $value) }}
   timeout server  {{$value}}
       {{ end }}
     {{ end }}
@@ -293,7 +293,7 @@ backend be_secure_{{$cfgIdx}}
   balance leastconn
     {{ end }}
     {{ with $value := index $cfg.Annotations "router.openshift.io/haproxy.timeout"}}
-      {{if (matchString "[0-9]*(us|ms|s|m|h|d)?" $value) }}
+      {{if (matchString "^[1-9][0-9]*(us|ms|s|m|h|d)?$" $value) }}
   timeout server  {{$value}}
       {{ end }}
     {{ end }}