provisioning jenkins

gistfile1.txt

#variables
$url = 'http://localhost:8080/jnlpJars/jenkins-cli.jar';
$jenkinsTempCliDir = Join-Path $env:TEMP "jenkinsClient"
if (![System.IO.Directory]::Exists($jenkinsTempCliDir)) {[System.IO.Directory]::CreateDirectory($jenkinsTempCliDir)}
$file = Join-Path $jenkinsTempCliDir "jenkins-cli.jar"


#functions
function Download-File {
param ( [string]$url, [string]$file )
  Write-Host "URL - $url"
  Write-Host "File - $file"
  $downloader = new-object System.Net.WebClient
  $downloader.Proxy.Credentials = [System.Net.CredentialCache]::DefaultNetworkCredentials;
  $downloader.DownloadFile($url, $file)
}


#Script!
param( [String]$waitJenkins = 20,  [String]$jenkinsVersion = "1.552.0.0" )

iex ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'));
 
 
cinst googlechrome;
$chromePath = "${Env:ProgramFiles(x86)}\Google\Chrome\Application\" 
$chromeApp = "chrome.exe"
$chromeCommandArgs = "--make-default-browser"
& "$chromePath$chromeApp" $chromeCommandArgs 
 
 
cinst javaruntime -force;
cinst jenkins -Version $jenkinsVersion -force;
start-service jenkins;

#download jenkins-cli.jar
Download-File $url $file
#go to specific firectory to execute jenkins-cli.jar
pushd $jenkinsTempCliDir
 
#10 seconds to give time to jenkins start
Start-Sleep -s $waitJenkins
 
#install plugins
java -jar jenkins-cli.jar -s http://localhost:8080/ install-plugin http://updates.jenkins-ci.org/download/plugins/greenballs/1.14/greenballs.hpi;
java -jar jenkins-cli.jar -s http://localhost:8080/ install-plugin http://updates.jenkins-ci.org/download/plugins/msbuild/1.23/msbuild.hpi;
java -jar jenkins-cli.jar -s http://localhost:8080/ install-plugin http://updates.jenkins-ci.org/download/plugins/mstest/0.7/mstest.hpi;
 
#github plugin and dependencies
java -jar jenkins-cli.jar -s http://localhost:8080/ install-plugin https://updates.jenkins-ci.org/download/plugins/credentials/1.15/credentials.hpi
java -jar jenkins-cli.jar -s http://localhost:8080/ install-plugin https://updates.jenkins-ci.org/download/plugins/ssh-credentials/1.7.1/ssh-credentials.hpi
java -jar jenkins-cli.jar -s http://localhost:8080/ install-plugin https://updates.jenkins-ci.org/download/plugins/scm-api/0.2/scm-api.hpi
java -jar jenkins-cli.jar -s http://localhost:8080/ install-plugin https://updates.jenkins-ci.org/download/plugins/multiple-scms/0.3/multiple-scms.hpi
java -jar jenkins-cli.jar -s http://localhost:8080/ install-plugin https://updates.jenkins-ci.org/download/plugins/git-client/1.10.1/git-client.hpi
java -jar jenkins-cli.jar -s http://localhost:8080/ install-plugin https://updates.jenkins-ci.org/download/plugins/github-api/1.56/github-api.hpi
java -jar jenkins-cli.jar -s http://localhost:8080/ install-plugin https://updates.jenkins-ci.org/download/plugins/ssh-agent/1.4.1/ssh-agent.hpi
java -jar jenkins-cli.jar -s http://localhost:8080/ install-plugin https://updates.jenkins-ci.org/download/plugins/git/2.2.4/git.hpi
java -jar jenkins-cli.jar -s http://localhost:8080/ install-plugin http://updates.jenkins-ci.org/download/plugins/github/1.9.1/github.hpi;
 
 
java -jar jenkins-cli.jar -s http://localhost:8080/ install-plugin http://updates.jenkins-ci.org/download/plugins/jobConfigHistory/2.8/jobConfigHistory.hpi
java -jar jenkins-cli.jar -s http://localhost:8080/ restart;
 
#back to original directory
popd
 
#open jenkins url in a browser
(new-object -com shell.application).Open("http://localhost:8080");

at the line 47, why to use such an old version?