Bugfix 1491: Replacing pkg_resources for importlib.metadata

Change-Id: I729ee2d5d3628c30a0a265978a355eb26f3a9bb2
Signed-off-by: sousaedu <eduardo.sousa@canonical.com>
diff --git a/requirements.in b/requirements.in
index 2b6c815..4ee7d89 100644
--- a/requirements.in
+++ b/requirements.in
@@ -23,6 +23,7 @@
 fog05-sdk==0.2.0
 # TODO py3 genisoimage
 logutils
+importlib-metadata
 netaddr
 networking-l2gw
 oca