committing changes in /etc after apt run

Package changes:
-python-acme 0.28.0-1~deb9u1 all
-python-certbot 0.10.2-1 all
-python-configargparse 0.11.0-1 all
-python-funcsigs 1.0.2-3 all
-python-josepy 1.1.0-2~deb9u1 all
-python-mock 2.0.0-3 all
-python-parsedatetime 2.1-3+deb9u1 all
-python-pbr 1.10.0-1 all
-python-requests-toolbelt 0.7.0-1 all
-python-rfc3339 1.0-4 all
-python-zope.component 4.3.0-1 all
-python-zope.event 4.2.0-1 all
-python-zope.hookable 4.0.4-4+b2 amd64
-python-zope.interface 4.3.2-1 amd64

diff --git a/alternatives/pbr b/alternatives/pbr
index a1a51d1b055ba8e7f6be78d216565fa328988fa4..0ac3fb33d96d5aee3b9bee053b7b16177cca8f3a 120000 (symlink)
--- a/alternatives/pbr
+++ b/alternatives/pbr
@@ -1 +1 @@
-/usr/bin/python2-pbr
\ No newline at end of file
+/usr/bin/python3-pbr
\ No newline at end of file