Sync build and CI Go versions at latest 1.16 (open-telemetry#34)

* Sync build and CI Go versions at latest 1.16

* Run go mod tidy

* Set go binary to use in the compilation phase in tests

Signed-off-by: Juraci Paixão Kröhling <juraci@kroehling.de>

Co-authored-by: Juraci Paixão Kröhling <juraci@kroehling.de>

.github/workflows/go.yaml

@@ -15,7 +15,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.15
+        go-version: 1.16
 
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2

.github/workflows/integration-test.yaml

@@ -15,7 +15,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.15
+        go-version: 1.16
 
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2

.github/workflows/release.yml

@@ -18,12 +18,12 @@ jobs:
         name: Set up Go
         uses: actions/setup-go@v2
         with:
-          go-version: 1.15
+          go-version: 1.16
       -
         name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v2
         with:
           version: latest
           args: release --rm-dist
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

go.mod

@@ -14,7 +14,7 @@
 
 module github.com/open-telemetry/opentelemetry-collector-builder
 
-go 1.14
+go 1.16
 
 require (
 	github.com/go-logr/logr v0.2.1

internal/scaffold/gomod.go

@@ -17,7 +17,7 @@ package scaffold
 const Gomod = `
 module {{.Distribution.Module}}
 
-go 1.15
+go 1.16
 
 require (
 	{{- range .Extensions}}

test/test.sh

@@ -1,5 +1,17 @@
 #!/bin/bash
 
+GOBIN=$(go env GOBIN)
+if [[ "$GO" == "" ]]; then
+    GOBIN=$(which go)
+fi
+
+if [[ "$GOBIN" == "" ]]; then
+    echo "Could not determine which Go binary to use."
+    exit 1
+fi
+
+echo "Using ${GOBIN} to compile the distributions."
+
 # each attempt pauses for 100ms before retrying
 max_retries=50
 
@@ -20,7 +32,7 @@ do
 
     echo "Starting test '${test}' at `date`" >> "${out}/test.log"
 
-    go run . --config "./test/${test}.builder.yaml" --output-path "${out}" --name otelcol-built-test > "${out}/builder.log" 2>&1
+    go run . --go "${GOBIN}" --config "./test/${test}.builder.yaml" --output-path "${out}" --name otelcol-built-test > "${out}/builder.log" 2>&1
     if [ $? != 0 ]; then
         echo "❌ FAIL ${test}. Failed to compile the test ${test}. Build logs:"
         cat "${out}/builder.log"