Remove set -x in install_csi_driver.sh (#220)

# Summary

This removes unnecessary bash debug switch in install_csi_driver.sh and
aligns it to the standard `set -Eeou pipefail` preamble we use in all
shell scripts.

Author: lsierant

scripts/dev/install_csi_driver.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-set -eux
+set -Eeou pipefail
 
 source scripts/funcs/kubernetes