Fix CI: Remove redundant MASTER_DATA_DIRECTORY terminology

Author: tuhaihe

.github/workflows/binary-swap-check.yml

@@ -560,10 +560,7 @@ jobs:
           set -eo pipefail
           CURRENT_RPM=$(ls "${GITHUB_WORKSPACE}"/current_rpm/*.rpm | head -1)
           echo "Installing current RPM: ${CURRENT_RPM}"
-          
-          # Since package name is same, dnf might treat it as upgrade. 
-          # We force install or use 'allowerasing' if needed.
-          # But we want dependencies too. 
+
           dnf install -y "${CURRENT_RPM}" || dnf upgrade -y "${CURRENT_RPM}"
           
           # Check installed location
@@ -616,6 +613,7 @@ jobs:
             fi
             cd ${GITHUB_WORKSPACE}/gpAux/gpdemo
             make cluster
+            source gpdemo-env.sh
             gpstop -a
           "