gnu: packages/golang-*: Skip some tests on ARM.

* gnu/packages/golang-build.scm (go-golang-org-x-sys) [arguments]
<test-flags>: Skip 4 failing tests on ARM systems.
(go-golang-org-x-net) [arguments] <test-flags>: Skip 2 tests on ARM
systems.  <phases>: Do not delete 'build, skip it.

* gnu/packages/golang-check.scm (go-github-com-smartystreets-goconvey)
[arguments] <test-flags>: Skip one failing test on ARM systems.

* gnu/packages/golang-maths.scm (go-gonum-org-v1-gonum) [arguments]
<test-subdirs>: Skip tests in "spatial" on non x86-64 systems.

* gnu/packages/golang-web.scm (go-github-com-safchain-ethtool)
[arguments] <test-flags>: Skip one test failing on ARM.
(go-github-com-mdlayher-socket) [arguments] <test-flags>: Skip one test
on ARM systems.
(go-github-com-mdlayher-netlink) [arguments] <test-flags>: Skip some
failing tests on ARM systems.
(go-github-com-mikioh-tcp) [arguments] <test-flags>: Move logic here,
skip one test on ARM system.  <phases>: Remove 'disable-failing-tests.
(go-github-com-libp2p-go-yamux-v4) [arguments] <test-flags>: Skip one
failing test on ARM systems.
(go-github-com-libp2p-go-yamux-v5) [arguments]: Inherit from
go-github-com-libp2p-go-yamux-v4.
(go-github-com-marten-seemann-tcp) [arguments] <test-flags>: Move logic
here, and skip one failing test on ARM system.  <phases>: Remove
'disable-failing-tests.

* gnu/packages/golang-xyz.scm (go-github-com-jbenet-go-temp-err-catcher)
[arguments] <test-flags>: Skip one failing test on ARM system.
(go-github-com-jbenet-goprocess): [arguments] <test-flags>: Run short
tests only skip 7 tests on ARM systems.
(go-github-com-cilium-ebpf) [arguments] <test-flags>: Skip 2 failing
tests on ARM system.
(go-github-com-elastic-gosigar) [arguments] <test-flags>: Utilize it and
skip 2 failing tests on ARM systems.  <phases>: Remove
'disable-failing-tests.

Change-Id: I191cd2a20a16eef0c77b04f0f6fdf72a3bb8d3be

gnu/packages/golang-check.scm

@@ -1949,7 +1949,10 @@ execution when a test fails.")
                              "TestStackModeMultipleInvocationInheritance"
                              "TestStackModeMultipleInvocationInheritance2"
                              "TestStackModeMultipleInvocationInheritance3"
-                             "TestWatcher")
+                             "TestWatcher"
+                             #$@(if (target-arm?)
+                                    '("TestInfiniteLoopWithTrailingFail")
+                                    '()))
                        "|"))))
     (propagated-inputs
      (list go-github-com-jtolds-gls