go-bindata: adding modtime to go-bindata files

Since files can be modifed or accidentally removed, git checkout doesn't
restore their timestamps, for that reason we should save go-bindata with
the timestamp hardcode or otherwise go-bindata check might complain
about different timestamps in the files generated files.

Signed-off-by: André Martins <andre@cilium.io>

daemon/Makefile

@@ -4,9 +4,9 @@ TARGET=cilium-agent
 SOURCES := $(shell find ../api ../common ../daemon ../pkg . -name '*.go')
 $(TARGET): $(SOURCES) check-bindata
 	go build $(GOBUILD) -ldflags "-X "github.com/cilium/cilium/common".Version=$(VERSION)" -o $(TARGET)
-GO_BINDATA := go-bindata -prefix ../ -mode 0640 -ignore Makefile -ignore bpf_features.h \
-	-ignore lxc_config.h -ignore netdev_config.h -ignore node_config.h \
-	-ignore '.+\.o$$'
+GO_BINDATA := go-bindata -prefix ../ -mode 0640 -modtime 1450269211 \
+	-ignore Makefile -ignore bpf_features.h -ignore lxc_config.h \
+	-ignore netdev_config.h -ignore node_config.h -ignore '.+\.o$$'
 
 all: $(TARGET)