The #urlsafe_encode64 method complies with RFC 4648 but as the documentation
points out it uses the "URL and Filename Safe Alphabet". The #strict_encode64
method does not, and does not include linefeeds.
Fixes#10438
Prior to this commit, the `Util::Powershell.execute_inline`
method didn't properly join the passed in command and instead attempted
to execute the array of strings. This commit updates that
behavior to join the command array prior to inserting it into the full
powershell command.
Prior to this commit, the function used to determine the version of
Powershell would loop forever inside the Subprocess.execute function
because the process would never exit. This commit fixes that by passing
in a ruby block to capture the version from stdout instead of trying to
capture it from the returned process when it exits.
Adds powershell validation to ensure powershell is available on
the PATH and checks powershell version to ensure meets the
defined minimum powershell version.
