Enable conan revisions mode

Change-Id: I0fb9d6943cf0e6e54f631314a67348f703c31e41
Reviewed-by: Heikki Halmet <heikki.halmet@qt.io>
(cherry picked from commit 3802e21afe)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

coin/provisioning/common/unix/install-conan.sh

@@ -1,8 +1,12 @@
 #!/usr/bin/env bash
 
+# shellcheck source=../unix/SetEnvVar.sh
+source "${BASH_SOURCE%/*}/../unix/SetEnvVar.sh"
+
 # This script will install Conan
 # Note! Python3 is required for Conan installation
 
 # Install Conan to Python user install directory (typically ~./local/)
 pip3 install conan --user
 
+SetEnvVar "CONAN_REVISIONS_ENABLED" "1"

coin/provisioning/common/windows/conan.ps1

@@ -43,6 +43,7 @@ Write-Output "Conan = 1.29.0" >> ~\versions.txt
 Run-Executable "$scriptsPath\conan.exe" "remote add qtproject https://api.bintray.com/conan/qtproject/conan --insert --force"
 
 Set-EnvironmentVariable "CI_CONAN_BUILDINFO_DIR" "C:\Utils\conanbuildinfos"
+Set-EnvironmentVariable "CONAN_REVISIONS_ENABLED" "1"
 
 function Run-Conan-Install
 {