[PATCH] Replace Python 'import importlib' with 'import importlib.machinery'

[Thomas Schwinge <thomas@codesourcery.com>]

Fix-up for recent commit f0582fdbf1267f0f34bf3c3b6698b60026410146
"Replace use of deprecated Python 'imp' module with 'importlib'", which...

    [...] seems to have broken something on centos7 x86_64:

    https://builder.wildebeest.org/buildbot/#/changes/7273

      File "/srv/buildbot/worker/libabigail-centos-x86_64/build/tests/mockfedabipkgdiff", line 73, in <module>
        fedabipkgdiff_mod = importlib.machinery.SourceFileLoader('fedabipkgdiff', FEDABIPKGDIFF).load_module()
    AttributeError: 'module' object has no attribute 'machinery'

Again, I've asked The Internet what to do about that, and this commit is the
result.  But beware: I'm still not a Python wizard.

	* tests/mockfedabipkgdiff.in: Replace Python 'import importlib'
	with 'import importlib.machinery'.
---
 tests/mockfedabipkgdiff.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/mockfedabipkgdiff.in b/tests/mockfedabipkgdiff.in
index 7de42b86..29a28ad9 100644
--- a/tests/mockfedabipkgdiff.in
+++ b/tests/mockfedabipkgdiff.in
@@ -39,7 +39,7 @@ variables.
 
 import os
 import tempfile
-import importlib
+import importlib.machinery
 import six
 
 try:
-- 
2.25.1