Create .powershell-psscriptanalyzer.psd1

Created some exceptions to the PowerShell lint program. I couldn't add them to the source itself, because it was a file to be included as a "userdata" for an EC2 instance and therefore it had to have <powershell> as the first line. This caused the PowerShell lint to ignore the in source directives.

Author: kcantrel

.github/linters/.powershell-psscriptanalyzer.psd1

@@ -0,0 +1,5 @@
+@{
+    ExcludeRules=@('PSAvoidUsingConvertToSecureStringWithPlainText',
+                   'PSAvoidTrailingWhitespace',
+                   'PSAvoidUsingWriteHost')
+}