Add asn1 to app start in itest for R16 compat
Add asn1 to app start in itest for R16 compat

This should still work for R15 since return values of application:start
are not being checked. In R16, the public_key application depends on
crypto and asn1.

eryx67/sqerl,namjae/sqerl,chef/sqerl,eryx67/sqerl,chef/sqerl,namjae/sqerl