Modified testScript.sh to allow for Win2012 to build JDK

[Willsparker]

Fixes: #938

With this, all OS' currently supported in testScript.sh should be able to test a build.

[Willsparker]

Adding [WIP] tag to this PR, as I'm consistently having an error when trying to build a JDK on Windows, in that the build hangs up when attempting to move the workspace- though it also can't find a viable version of Java in a directory that definitely has one, so I'm going to investigate if that is due to an exporting an environment variable issue.

[karianna]

@Willsparker merge conflicts...

[Willsparker]

I've got to the point where the playbook installs the dependencies correctly, and a JDK can now be built on the Windows machine without additional user input- however, when attempting to do this through the script, one of these error messages occur:

fatal: mmap failed: Resource temporarily unavailable
error: https://github.com/adoptopenjdk/openjdk-jdk8u.git did not send all necessary objects

      0 [main] git 579 fhandler_disk_file::fixup_mmap_after_fork: requested 0x6FFF8FA0000 != 0x0 mem alloc base 0x0, state 0x10000, size 132998073876480, Win32 error 1455
   3442 [main] git 579 C:\cygwin64\usr\libexec\git-core\git.exe: *** fatal error in forked process - recreate_mmaps_after_fork_failed
   7928 [main] git 579 cygwin_exception::open_stackdumpfile: Dumping stack trace to git.exe.stackdump
      1 [main] git 578 dofork: child -1 - forked process 2112 died unexpectedly, retry 0, exit code 0x100, errno 11
error: cannot fork() for index-pack: Resource temporarily unavailable
fatal: fetch-pack: unable to fork off index-pack

Both occur after saving ./security/cacerts. Google specifies it's a cygwin error, it seems.

[Willsparker]

Errors have been hit. When attempting to run the BuildJDKWin.sh script via vagrant powershell -c, when the version of git that is used is the one installed with the playbook (known as WinGit from now), an error will occur where it successfully clones a repository to /tmp/openjdk-build-dir/, however when attempting to cd into that repository, it doesn't exist- this is because WinGit has caused the repo to be at C:/tmp/openjdk-build-dir/
Source : git-for-windows/git#568
Keeping to Cygwin's inbuilt Git, causes an error in which cloning a repository with result in a well known fork(): Resource Temporarily Unavailable error or fatal: mmap failed: Resource temporarily unavailable error. This can supposedly be solved by rebasing the Cygwin packages, however I'm yet to make this work, let alone implement it into the script so automation of building the JDK can be achieved.

[Willsparker]

The new direction I've taken this is to add a role into the playbook that will run the build script on the machine. The previous problems are therefore side-stepped as a different piece of software is communicating with the VM. This contains the tag build, and so can be skipped when a JDK doesn't need to be built on the VM.

[karianna]

nitpicks

[karianna]

LGTM

[sxa]

Doing this as a playbook role is confusing and definitely not the right approach to take. Since I believe ansible and vagrant powershell are both communicating to the machine over WinRM there must be an alternate way to make this work.

[Willsparker]

As per @sxa555 's request, I've removed the role from the playbooks. Instead, the testScript has instead been altered to used the command ansible to run the buildScript on the Windows VM, however just running the ad-hoc command, therefore it doesn't require addition to the playbook as a role.