[MRELEASE-763] release:prepare ignores invalid dependencies in inactive profiles

**[Mark Hobson](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=mihobson)** opened **[MRELEASE-763](https://issues.apache.org/jira/browse/MRELEASE-763?redirect=false)** and commented

`release:prepare` completes successfully on projects that contain invalid dependencies in inactive profiles.

For example, a POM containing the following profile containing a non-existent dependency will prepare without problems:

```
...

silly


silly
silly
1.0

...
```

Furthermore, if this dependency was changed to a SNAPSHOT version then it would still succeed. I would expect `prepare` to fail in both cases.

---

**Affects:** 2.3

The issue names no source files or tests. Start by reproducing the behavior with a POM containing the inactive profile shown and run release:prepare; done means preparation fails for both the invalid dependency and its SNAPSHOT version.

Written by the indexing model from the issue text.