Refs #3383: Disable proxy and override env var on curl calls
Merge pull request #66 from Kegeruneku/bug_3383/dev/3383_correct_curl_calls_in_case_of_an_interfering_proxy

Fixes #3383: Disable proxy and override env var on curl calls
Merge branch 'branches/rudder/2.3' into branches/rudder/2.4

Conflicts:
	techniques/system/inventory/1.0/fusionAgent.st
Merge branch 'branches/rudder/2.4' into branches/rudder/2.5
Merge branch 'branches/rudder/2.5'

Conflicts:
	initial-promises/node-server/inventory/1.0/fusionAgent.cf
	techniques/fileDistribution/downloadFile/1.0/downloadFile.st
	techniques/system/inventory/1.0/fusionAgent.st
	techniques/system/inventory/1.0/getUuid.st