Revert "Remove testing from script/cibuild"

This reverts commit 90477b5.

Author: cainejette

script/cibuild

@@ -5,6 +5,18 @@ set -e
 # Enable verbose logging of ssh commands
 export GHE_VERBOSE_SSH=true
 
+res=true
+version=2.21.0
+echo "==> Running test suite with GHE_TEST_REMOTE_VERSION=$version"
+export GHE_TEST_REMOTE_VERSION="$version"
+if ! find test -name "test-*.sh" -print0 | xargs -0 -P 4 -n 1 /bin/bash; then
+  res=false
+fi
+echo
+
+# If any of the tests above failed, exit non-zero
+$res
+
 # Bail out when --no-package given
 [ "$1" = "--no-package" ] && exit 0