Fix asterisk encoding

[poddm]

Resolving errors when Configuration values contain an asterisk.

Error: CloudStack API error 401 (CSExceptionErrorCode: 0): unable to verify user credentials and/or request signature

Found the following note here:

If you have API calls which contain * (asterisk) characters, you will need to add the option “safe = ‘’” for the URL encoding. The reason is that Python’s urllib will encode * characters by default, while CloudStack’s internal encoder does not encode them; this results in an authentication failure for your API call. In the above you would replace “urllib.quote_plus(request[k])” with “urllib.quote_plus(request[k], safe=’’)”.