Added support for a ignoreSSLIssues as a parameter on dynamic methods

[jamjon3]

Allows the use of this as a parameter on dynamic methods using to the underlying http-builder support for it. Essentially it alternatively registers a scheme using the ignoreSSLIssues() function on the client rather than via SimpleHTTPBuilderSSLHelper.groovy

This addresses closed issue #14 where the http-builder was updated but the plugin had no handling for it (example in the comments)

[jamjon3]

Works like this:

withRest(uri: "https://www.pcwebshop.co.uk/", ignoreSSLIssues: true) {
  get() { resp, reader ->
    /** Do some stuff here **/
  }
}

[jamjon3]

Pulls out this parameter early