Bump Golang 1.12.6

go1.12.6 (released 2019/06/11) includes fixes to the compiler, the linker,
the go command, and the `crypto/x509`, `net/http`, and `os` packages. See
the Go 1.12.6 milestone on our issue tracker for details:
https://github.com/golang/go/issues?q=milestone%3AGo1.12.6

full diff: golang/go@go1.12.5...go1.12.6

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit 01ba39e)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Upstream-commit: fd776cdf69cfb4f7d9855655fbb55b397e22d990
Component: packaging

Author: thaJeztah

components/packaging/Makefile

@@ -5,7 +5,7 @@ VERSION?=0.0.0-dev
 DOCKER_GITCOMMIT:=abcdefg
 ARCH=$(shell uname -m)
 STATIC_VERSION=$(shell static/gen-static-ver $(ENGINE_DIR) $(VERSION))
-GO_VERSION:=1.12.5
+GO_VERSION:=1.12.6
 DEFAULT_PRODUCT_LICENSE:=Community Engine
 PLATFORM=Docker Engine - Community
 BUILDTIME=$(shell date -u -d "@$${SOURCE_DATE_EPOCH:-$$(date +%s)}" --rfc-3339 ns 2> /dev/null | sed -e 's/ /T/')

components/packaging/deb/Makefile

@@ -6,7 +6,7 @@ GITCOMMIT?=$(shell cd $(CLI_DIR) && git rev-parse --short HEAD)
 VERSION?=0.0.0-dev
 STATIC_VERSION=$(shell ../static/gen-static-ver $(ENGINE_DIR) $(VERSION))
 GO_BASE_IMAGE=golang
-GO_VERSION:=1.12.5
+GO_VERSION:=1.12.6
 GO_IMAGE=$(GO_BASE_IMAGE):$(GO_VERSION)
 DEB_VERSION=$(shell ./gen-deb-ver $(CLI_DIR) "$(VERSION)")
 CHOWN:=docker run --rm -v $(CURDIR):/v -w /v alpine chown

components/packaging/image/Makefile

@@ -3,7 +3,7 @@ ENGINE_DIR:=$(CURDIR)/../../engine
 CLI_DIR:=$(CURDIR)/../../cli
 VERSION?=0.0.0-dev
 GO_BASE_IMAGE=golang
-GO_VERSION:=1.12.5
+GO_VERSION:=1.12.6
 ENGINE_GO_IMAGE=$(GO_BASE_IMAGE):$(GO_VERSION)
 STATIC_VERSION=$(shell ../static/gen-static-ver $(ENGINE_DIR) $(VERSION))
 DOCKER_HUB_ORG?=dockereng

components/packaging/rpm/Makefile

@@ -5,7 +5,7 @@ GITCOMMIT=$(shell cd $(ENGINE_DIR) && git rev-parse --short HEAD)
 VERSION?=0.0.0-dev
 STATIC_VERSION=$(shell ../static/gen-static-ver $(ENGINE_DIR) $(VERSION))
 GO_BASE_IMAGE=golang
-GO_VERSION:=1.12.5
+GO_VERSION:=1.12.6
 GO_IMAGE?=$(GO_BASE_IMAGE):$(GO_VERSION)
 GEN_RPM_VER=$(shell ./gen-rpm-ver $(CLI_DIR) $(VERSION))
 CHOWN=docker run --rm -i -v $(CURDIR):/v -w /v alpine chown