The other method for running which java doesn't work on OSX, as java is installed as an empty shim when not installed in the base OSX image:
```
vagrant:~ vagrant$ java
No Java runtime present, requesting install.
vagrant:~ vagrant$ /usr/libexec/java_home --failfast
Unable to find any JVMs matching version "(null)".
vagrant:~ vagrant$
```
We can use the `/usr/libexec/java_home --failfast` command to check if
java is actually present first.
Originally-by: Peter Souter <peter.souter@puppetlabs.com>
Add info about OpenBSD support to README.md and metadata.json
Add a note about OpenBSD java_version fact to README.markdown.
Fixup wording on context in one of the java patch level regression tests.
No mentioning of OpenBSD in metdata.json
Cleanup wording of context as suggested by @elyscape
update contexts as suggested by @elyscape
Adapted from the many found on Github, simply runs `java -version` and strips the results. From what I can find there aren't many edge cases for the result `java -version 2>&1` could return, so this should be fairly compatible.
