installing pycrypto with pip post-install script

Change-Id: I54218e779ae2860c4da63ea182905be5c839a707
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/debian/python3-osm-common.postinst b/debian/python3-osm-common.postinst
index 658ef23..30e749c 100755
--- a/debian/python3-osm-common.postinst
+++ b/debian/python3-osm-common.postinst
@@ -24,7 +24,7 @@
 pip3 install --upgrade aiokafka==0.4.*
 pip3 install --upgrade pymongo==3.7.*
 pip3 install --upgrade pyyaml==3.*
-# pip3 install pycrypto   added as dependency: python3-crypto
+pip3 install pycrypto   # added dependency python3-crypto seems not working
 
 #Creation of log folder
 mkdir -p /var/log/osm