Few fixes to the cell setup related scripts after the removal
of ONOS_CELL from the cell config files.

Change-Id: I97c2d1f8d191f59db00a455281bbba7f04383335
diff --git a/tools/dev/onos.cshrc b/tools/dev/onos.cshrc
index 8dba4b2..feff165 100644
--- a/tools/dev/onos.cshrc
+++ b/tools/dev/onos.cshrc
@@ -29,7 +29,7 @@
 endif
 setenv KARAF_LOG $KARAF/data/log/karaf.log
 
-alias onos-setup-cell ' ( $ONOS_ROOT/tools/test/bin/onos-show-cell \!^ ) && setenv ONOS_CELL \!^'
+alias onos-setup-cell ' ( env ONOS_CELL=\!^ $ONOS_ROOT/tools/test/bin/onos-show-cell \!^ ) && setenv ONOS_CELL \!^'
 
 set path=( $path $ONOS_ROOT/tools/dev/bin $ONOS_ROOT/tools/test/bin )
 set path=( $path $ONOS_ROOT/tools/build )