Bump go version to 1.17 in go.mod/CI (#230)

1.13 is sufficiently old at this point and net.ErrClosed from 1.16 will be nice
to use.

This change additionally runs go fmt to bring in the new 1.17 build tag syntax
and builds the binaries in our CI with 1.17+.

Signed-off-by: Daniel Canter <dcanter@microsoft.com>

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v2
         with:
-          go-version: '^1.15.0'
+          go-version: '^1.17.0'
 
       - run: go build ./pkg/etw/sample/
       - run: go build ./tools/etw-provider-gen/