ci-tools: versions of golang

Add and update golang versions. Also fix install.tools target for
installing govet

Signed-off-by: Vincent Batts <[email protected]>

Author: vbatts

.travis.yml

@@ -1,7 +1,8 @@
 language: go
 go:
-  - 1.6
-  - 1.5.3
+  - 1.7
+  - 1.6.3
+  - 1.5.4
 
 sudo: required
 

Makefile

@@ -2,6 +2,7 @@
 EPOCH_TEST_COMMIT	:= 78e6667ae2d67aad100b28ee9580b41b7a24e667
 OUTPUT_DIRNAME		?= output/
 DOC_FILENAME		?= oci-runtime-spec
+SHELL			?= $(shell command -v sh 2>/dev/null)
 DOCKER			?= $(shell command -v docker 2>/dev/null)
 PANDOC			?= $(shell command -v pandoc 2>/dev/null)
 ifeq "$(strip $(PANDOC))" ''
@@ -97,17 +98,17 @@ install.tools: .install.golint .install.govet .install.gitvalidation
 # golint does not even build for <go1.5
 .install.golint:
 ifeq ($(call ALLOWED_GO_VERSION,1.5,$(HOST_GOLANG_VERSION)),true)
-	go get github.com/golang/lint/golint
+	go get -u github.com/golang/lint/golint
 endif
 
 # go vet is now included in >=go1.5, so no need to get it.
 .install.govet:
-ifeq ($(call ALLOWED_GO_VERSION,1.5,$(HOST_GOLANG_VERSION)),true)
-	go get golang.org/x/tools/cmd/vet
+ifneq ($(call ALLOWED_GO_VERSION,1.5,$(HOST_GOLANG_VERSION)),true)
+	go get -u golang.org/x/tools/cmd/vet
 endif
 
 .install.gitvalidation:
-	go get github.com/vbatts/git-validation
+	go get -u github.com/vbatts/git-validation
 
 
 .PHONY: clean