b1873: Image upgrade functions remove redundant variable

configuration/environments_scripts/repo/usr/local/bin/imageupgrade_functions.sh

@@ -83,13 +83,13 @@ build_crontab_and_setup_files() {
     cd /root/
     chown root:root environments_scripts
     cd environments_scripts
-    ./build-crontab-and-cp-files "${BUILD_TYPE}" "${GIT_USER}" "${RELATIVE_PATH_TO_GIT}"
+    ./build-crontab-and-cp-files "${ENVIRONMENT_TYPE}" "${GIT_USER}" "${RELATIVE_PATH_TO_GIT}"
     cd ..
     rm -rf /root/environments_scripts
 }
 
 setup_keys() {
-    #1: Image type.
+    #1: Environment type.
     cd /root/keysTemp
     OLD_IFS="$IFS"
     SEPARATOR="@."

configuration/environments_scripts/reverse_proxy/files/usr/local/bin/imageupgrade

@@ -15,9 +15,8 @@ if echo "${METADATA}" | grep -q "^image-upgrade$"; then
   echo "Image upgrade..."
   GIT_USER="trac"
   RELATIVE_PATH_TO_GIT="gitcopy"
-  BUILD_TYPE="reverse_proxy"
   LOGON_USER_HOME="ec2-user"
-  IMAGE_TYPE="reverse_proxy"
+  ENVIRONMENT_TYPE="reverse_proxy"
   run_yum_update
   build_crontab_and_setup_files
   finalize