Previous value of 8M caused JVM to crash on servers with more then 40G of RAM
Tested on databases servers up to 1.5T of RAM, 12M seems to be sufficient
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.
