Update Spack (#341)

* Update Spack.

* Update package API.

Author: jrood-nrel

repos/spack_repo/exawind/packages/ctest_package/package.py

@@ -4,13 +4,13 @@
 #
 # This software is released under the BSD 3-clause license. See LICENSE file
 # for more details.
-import llnl.util.tty as tty
 import importlib
 import glob
 import os
 import shutil
 import time
-import llnl.util.filesystem as fs
+import spack.llnl.util.filesystem as fs
+import spack.llnl.util.tty as tty
 import spack.phase_callbacks
 import spack.util.log_parse
 

repos/spack_repo/exawind/repo.yaml

@@ -1,3 +1,3 @@
 repo:
   namespace: 'exawind'
-  api: v2.0
+  api: v2.2