Changing bash_profile not to reserve a borrowed cell during sourcing.

Change-Id: I30bb38bd2a2e3d32c1c8019afe8198078bf9124e
diff --git a/tools/dev/bash_profile b/tools/dev/bash_profile
index 1c449a2..1825264 100644
--- a/tools/dev/bash_profile
+++ b/tools/dev/bash_profile
@@ -159,7 +159,7 @@
     esac
 }
 
-[ -n "$ONOS_CELL" ] && cell $ONOS_CELL > /dev/null
+[ -n "$ONOS_CELL" -a "$ONOS_CELL" != "borrow" ] && cell $ONOS_CELL > /dev/null
 
 # Lists available cells
 function cells {