MON-311 replace pwd function by env variable for pwd

scripts/03_update_module.sh

@@ -4,7 +4,7 @@ set -xueo pipefail
 source "$(dirname $0)/utils.sh"
 goto_root
 
-root=$(basename $(pwd))
+root=$(basename ${PWD})
 
 # loop over every monitors set
 for path in $(find "$(get_scope $1)" -path ./incubator -prune -o -name 'monitors-*.tf' -print | sort -fdbi); do
@@ -14,7 +14,7 @@ for path in $(find "$(get_scope $1)" -path ./incubator -prune -o -name 'monitors
     # if modules.tf does not exist AND if this set respect our tagging convention
     if ! [ -f modules.tf ] && grep -q filter_tags_use_defaults inputs.tf; then
         relative=""
-        current="$(pwd)"
+        current="${PWD}"
         while [[ "$(basename $current)" != "$root" ]]; do
             relative="${relative}../"
             current="$(dirname $current)"