Rename settings_oslo parameter MANAGER to ENV_MANAGER

ENV_MANAGER variable will be used to activate one of
the environment managers:
ENV_MANAGER=devops - create, power on/off VM and BM nodes,
                     snapshots for libvirt VMs
ENV_MANAGER=heat   - create OpenStack heat stack
ENV_MANAGER=empty  - only for SSH to an existing environment

Change-Id: I90a59107a7fd350ecfeb821734c2dac4e351d468
diff --git a/tcp_tests/templates/_heat_environments/microcloud-8116-cookied-cicd-queens-dvr-sl.sh b/tcp_tests/templates/_heat_environments/microcloud-8116-cookied-cicd-queens-dvr-sl.sh
index ed0e190..eeda42b 100755
--- a/tcp_tests/templates/_heat_environments/microcloud-8116-cookied-cicd-queens-dvr-sl.sh
+++ b/tcp_tests/templates/_heat_environments/microcloud-8116-cookied-cicd-queens-dvr-sl.sh
@@ -18,7 +18,7 @@
 export IMAGE_PATH_CFG01_DAY01=/home/jenkins/images/cfg01-day01.qcow2
 export REPOSITORY_SUITE=2019.2.0
 
-export MANAGER=heat
+export ENV_MANAGER=heat
 
 export ENV_NAME=test_env_queens
 export LAB_CONFIG_NAME=cookied-cicd-queens-dvr-sl