python-linux-procfs: Add tar.xz and asc files to gitignore

Add tar.xz and *.asc files to .gitignore

Signed-off-by: John Kacur <jkacur@redhat.com>
diff --git a/.gitignore b/.gitignore
index af1c016..f8fbd6f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,6 @@
 *.pyc
 *.swp
+*.asc
+*.tar.xz
 procfs/__pycache__/
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