Downgrade to Go 1.5.3.

[calavera]

To not hit the issue with the request Host header.

Fixes #20865

Signed-off-by: David Calavera david.calavera@gmail.com

[crosbymichael]

LGTM

[icecrime]

LGTM

[calavera]

Is this a flacky error on experimental, or different Go versions output different messages?

00:02:50 FAIL: docker_experimental_network_test.go:326: DockerNetworkSuite.TestDockerNetworkIpvlanAddressing
00:02:50 
00:02:50 docker_experimental_network_test.go:340:
00:02:50     c.Assert(out, checker.Contains, "default via 2001:db8:abca::254 dev eth0")
00:02:50 ... obtained string = "" +
00:02:50 ...     "fe80::/64 dev eth0  metric 256 \n" +
00:02:50 ...     "unreachable default dev lo  metric -1  error -101\n" +
00:02:50 ...     "ff00::/8 dev eth0  metric 256 \n" +
00:02:50 ...     "unreachable default dev lo  metric -1  error -101\n"
00:02:50 ... substring string = "default via 2001:db8:abca::254 dev eth0"

[calavera]

it looks like it was

[thaJeztah]

Test will be fixed by #21492, and only fails on kernel 4.2+

[estesp]

Probably needs to be a follow-on PR for Dockerfile.ppc64le since it was switched to use native Go compiler, which exists in 1.6, but not 1.5.3. So, it will have to go back to gccgo I guess.

[thaJeztah]

Good catch, @estesp

[thaJeztah]

I checked, and I think all 1.6 references are covered here

[icecrime]

I triggered an arm build: let's wait for this one to complete before merging.