More features to Python based test suite

Squashed Commit from parallel-wget of:
b31e6e4 Add support for HTTPS Servers
b828a6e Sleep for n seconds before calling Wget Executable
7effa90 Support programatically setting Handler class variables
7e1f4c1 Correct the call to stop_HTTP_Server
f616192 Improve error handling when wget executable isn't available
31868fe Split large function to improve readability and extensibility

testenv/Test--https.py

@@ -0,0 +1,51 @@
+#!/usr/bin/env python3
+from sys import exit
+from WgetTest import HTTPTest, WgetFile, HTTPS, HTTP
+
+"""
+    This test ensures that Wget can download files from HTTPS Servers
+"""
+TEST_NAME = "HTTPS Downloads"
+############# File Definitions ###############################################
+File1 = "Would you like some Tea?"
+File2 = "With lemon or cream?"
+File3 = "Sure you're joking Mr. Feynman"
+
+A_File = WgetFile ("File1", File1)
+B_File = WgetFile ("File2", File2)
+C_File = WgetFile ("File3", File3)
+
+WGET_OPTIONS = "-d --no-check-certificate"
+WGET_URLS = [["File1", "File2"]]
+
+Files = [[A_File, B_File]]
+Existing_Files = [C_File]
+
+Servers = [HTTPS]
+
+ExpectedReturnCode = 0
+ExpectedDownloadedFiles = [A_File, B_File, C_File]
+
+################ Pre and Post Test Hooks #####################################
+pre_test = {
+    "ServerFiles"       : Files,
+    "LocalFiles"        : Existing_Files
+}
+test_options = {
+    "WgetCommands"      : WGET_OPTIONS,
+    "Urls"              : WGET_URLS
+}
+post_test = {
+    "ExpectedFiles"     : ExpectedDownloadedFiles,
+    "ExpectedRetcode"   : ExpectedReturnCode
+}
+
+err = HTTPTest (
+                name=TEST_NAME,
+                pre_hook=pre_test,
+                test_params=test_options,
+                post_hook=post_test,
+                servers=Servers
+).begin ()
+
+exit (err)