I've been transitioning a portlet from Liferay 6.2 to a bundle for Liferay 7. When I deploy it, it can't load, because of a missing resource:

```
$ blade sh diag 1084
diag 1084
org.mycompany.caasd.portal-ldap-sync [1084]
  Unresolved requirement: Import-Package: com.liferay.portal.kernel.service; 
version="[1.20.0,2.0.0)"

```

When I use Felix Gogo shell to see what's available, I don't see any kernel bundles. Is that a bundle I should be expecting to be installed, install myself, include in my bundle, or am I just not thinking about this the right way?