fix(helpers): Remove hard-coded us-east-2 region

Remove hard-coded AWS Region from the add-lcc-script helper, to use
the user's configured AWS region by default instead.

add-lcc-script.sh

@@ -1,16 +1,17 @@
 #!/bin/bash
 # Registers a Lifecycle Configuration Script using the AWS CLI
+# NOTE: This registration by itself will not attach or enable it for any domains/users yet
 
 set -eux
 
 export LCC_SCRIPT_NAME='set-proxy'
 export SCRIPT_FILE_NAME='scripts/set-proxy-settings/on-jupyter-server-start.sh'
-export SCRIPT_TYPE="JupyterServer"
-# export SCRIPT_TYPE="KernelGateway"
+export SCRIPT_TYPE='JupyterServer'
+# export SCRIPT_TYPE='KernelGateway'
 
 LCC_CONTENT=`openssl base64 -A -in ${SCRIPT_FILE_NAME}`
 
-aws sagemaker --region us-east-2 create-studio-lifecycle-config \
+aws sagemaker create-studio-lifecycle-config \
   --studio-lifecycle-config-name $LCC_SCRIPT_NAME \
   --studio-lifecycle-config-content $LCC_CONTENT \
   --studio-lifecycle-config-app-type $SCRIPT_TYPE