DXE-2673 [BUG] 400 Error - SIEM API Python Example

[estelae]

Describe the bug SIEM API (https://techdocs.akamai.com/siem-integration/reference/get-configid) has a recipe called Fetch security event in time-based mode | Python that uses this library. It does not work and returns an error.

To Reproduce Steps to reproduce the behavior:

import requests
from akamai.edgegrid import EdgeGridAuth, EdgeRc
from urllib.parse import urljoin

edgerc = EdgeRc('~/.edgerc.txt')
section = 'default'
baseurl = 'https://%s' % edgerc.get(section, 'host')

session = requests.Session()
session.auth = EdgeGridAuth.from_edgerc(edgerc, section)

configId = "12345"

path = "https://hostname/siem/v1/configs/{}".format(configId)

headers = {
    "Accept": "application/json"}

querystring = {
    "from": "1488816442",
    "to": "1488816784",
    "limit": 1000
}

result = session.get(urljoin(baseurl, path),
                     headers=headers, params=querystring)
print(result.status_code)
print(result.json())

Expected behavior For the documentation example to work.

Actual behavior It outputs this error.

{
'type': 'https://problems.cloudsecurity.akamaiapis.net/siem/v1/missing-parameters',
'title': 'Missing mandatory parameter(s) or illegal parameter parameter(s) in the request',
'instance': 'https://{host}/siem/v1/configs/{configid}?from={from}',
'detail': 'Missing mandatory parameter(s) or illegal parameter parameter(s) in the request',
'method': 'GET'
...
}

Judging from the instance above, it appears that only the first query parameter is being recognized. If the & character is encoded to %26 in the signature generation then the instance variable changes to 'instance': 'https://{host}/siem/v1/configs/{configid}?from={from}&to={to}&limit={limit}', but gives a 401 error for the signature not matching. If the & character is encoded to %26 in the request and signature, then it returns a 400 error for missing parameters.