Rename core fixtures to match the drivetrain component names

The following changes:
  common_services_deployed -> core_deployed
  sl_deployed -> stacklight_deployed

Change-Id: I6e505d2ef96053b19b2d43b0214f5a30f71ae8ea
diff --git a/tcp_tests/templates/cookied-cicd-k8s-calico-sl/deploy-and-test.groovy b/tcp_tests/templates/cookied-cicd-k8s-calico-sl/deploy-and-test.groovy
index 616ad61..d0f69b7 100644
--- a/tcp_tests/templates/cookied-cicd-k8s-calico-sl/deploy-and-test.groovy
+++ b/tcp_tests/templates/cookied-cicd-k8s-calico-sl/deploy-and-test.groovy
@@ -37,7 +37,7 @@
             . ./tcp_tests/utils/env_k8s
 
             # Initialize variables used in tcp-qa tests
-            export CURRENT_SNAPSHOT=sl_deployed  # provide the snapshot name required by the test
+            export CURRENT_SNAPSHOT=stacklight_deployed  # provide the snapshot name required by the test
             export TESTS_CONFIGS=\$(pwd)/${ENV_NAME}_salt_deployed.ini  # some SSH data may be filled separatelly
 
             export MANAGER=empty  # skip 'hardware' fixture, disable snapshot/revert features
@@ -46,9 +46,9 @@
             export salt_master_port=6969
             export SALT_USER=\$SALTAPI_USER
             export SALT_PASSWORD=\$SALTAPI_PASS
-            export COMMON_SERVICES_INSTALLED=true  # skip common_services_deployed fixture
+            export CORE_INSTALLED=true  # skip core_deployed fixture
             export K8S_INSTALLED=true              # skip k8s_deployed fixture
-            export sl_installed=true              # skip sl_deployed fixture
+            export sl_installed=true              # skip stacklight_deployed fixture
 
             py.test -vvv -s -p no:django -p no:ipdb --junit-xml=nosetests.xml -m k8s_calico_sl