Include renamed powershell files in automation zip

In changing the stemcell automation scripts from `.ps1` -> `.psm1` the
zip file assembly script was broken because it did not find the newly
renamed file resulting in scripts being missing from the resulting
archive.

Author: aramprice

bin/build-stemcell-automation-zip.sh

@@ -14,7 +14,7 @@ cp "${OPENSSH_ZIP}" "${TEMP_DIR}/OpenSSH-Win64.zip"
 cp "${BOSH_PSMODULES_ZIP}" "${TEMP_DIR}/bosh-psmodules.zip"
 cp "${AGENT_ZIP}" "${TEMP_DIR}/agent.zip"
 cp "${DEPS_JSON}" "${TEMP_DIR}/deps.json"
-for file in "${REPO_ROOT}"/stembuild/stemcell-automation/*ps1; do
+for file in "${REPO_ROOT}"/stembuild/stemcell-automation/*.ps*; do
   if ! [[ "${file}" =~ .*\.Tests\.ps1 ]]; then
     cp "${file}" "${TEMP_DIR}"
   fi