Add the "aptitude" package to aid debugging (#304)

Author: Prakash Surya

debian/rules

@@ -112,7 +112,8 @@ DEPENDS += $(DEPENDS.$(TARGET_PLATFORM))
 # product should not rely on them programmatically. They may be updated
 # or replaced without regard for backward compatibility.
 #
-DEPENDS += bcc-tools, \
+DEPENDS += aptitude, \
+	   bcc-tools, \
 	   bpftrace, \
 	   bpftrace-dbgsym, \
 	   crash-python, \