ci: fix dep failure, add go versions

including new version of golang. Switch to go1.14 for linting.
and remove the build of `dep`. We're on go modules for vendoring now.

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>

.travis.yml

@@ -1,6 +1,9 @@
 language: go
 go:
   - "1.x"
+  - "1.14.x"
+  - "1.13.x"
+  - "1.12.x"
   - "1.11.x"
   - "1.10.x"
   - "1.9.x"

Makefile

@@ -6,6 +6,7 @@ SOURCE_FILES := $(shell find . -type f -name "*.go")
 CLEAN_FILES := *~
 TAGS :=
 ARCHES := linux,386 linux,amd64 linux,arm linux,arm64 openbsd,amd64 windows,amd64 darwin,amd64
+GO_VER := go1.14
 
 default: build validation
 
@@ -33,7 +34,7 @@ lint: .lint
 CLEAN_FILES += .lint
 
 .lint: $(SOURCE_FILES)
-	if [[ "$(go version |awk '{ print $3 }')" =~ ^go1\.11\. ]] ; then \
+	@if [[ "$(findstring $(GO_VER),$(shell go version))" != "" ]] ; then \
 		set -e ; for dir in $(NO_VENDOR_DIR) ; do golint -set_exit_status $$dir ; done && touch $@ \
 	else \
 		touch $@ ; \
@@ -68,8 +69,10 @@ $(BUILD): $(SOURCE_FILES)
 	go build -o $(BUILD) $(BUILDPATH)
 
 install.tools:
-	go get -u -v github.com/golang/dep/cmd/dep
+	@go get -u github.com/fatih/color ; \
-	if [[ "$(go version |awk '{ print $3 }')" =~ ^go1\.11\. ]] ; then go get -u golang.org/x/lint/golint ; fi
+	if [[ "$(findstring $(GO_VER),$(shell go version))" != "" ]] ; then \
+		go get -u golang.org/x/lint/golint ;\
+	fi
 
 ./bin:
 	mkdir -p $@