Migrate bom command to use a Go workspace

Remove `GOFLAGS=-mod=mod` from the execution of
license-bill-of-materials.

Signed-off-by: Ivan Valdes <[email protected]>

Author: ivanvc

scripts/test.sh

@@ -483,7 +483,7 @@ function bom_pass {
   run cp go.sum go.sum.tmp || return 2
   run cp go.mod go.mod.tmp || return 2
 
-  output=$(GOFLAGS=-mod=mod run_go_tool github.com/appscodelabs/license-bill-of-materials \
+  output=$(run_go_tool github.com/appscodelabs/license-bill-of-materials \
     --override-file ./bill-of-materials.override.json \
     "${modules[@]}")
   code="$?"

scripts/updatebom.sh

@@ -14,7 +14,7 @@ function bom_fixlet {
   # shellcheck disable=SC2207
   modules=($(modules_for_bom))
 
-  if GOFLAGS=-mod=mod run_go_tool "github.com/appscodelabs/license-bill-of-materials" \
+  if run_go_tool "github.com/appscodelabs/license-bill-of-materials" \
       --override-file ./bill-of-materials.override.json \
       "${modules[@]}" > ./bill-of-materials.json.tmp; then
     cp ./bill-of-materials.json.tmp ./bill-of-materials.json