configSustainTime minor bug

[crisfernandes-ixia]

def configSustainTime(self, sustainTime):
    # https://192.168.129.154/api/v1/sessions/1/appsec/sessions/wireless-70d29f83-cd12-414b-9c6e-e52993684ee2/config/config/nodes/ue/ranges/1/controlPlane/primaryObjective/activeSubscribers

    response = self.patch(
        '/api/v2/sessions/{0}/config/config/nodes/ue/ranges/1/controlPlane/primaryObjective/activeSubscribers'.format(
            self.sessionId),
        data={'sustain': sustainTime}, headers=self.headers)   <## sustainTime instead of 34 
    assert response.status_code == 204