feat: backfill linz:slug attribute in collection.json files TDE-1315

[schmidtnz]

Motivation

An update to topo-imagery (PR #1152) and argo-tasks (PR #1124) will add the the linz:slug attribute new collection.json files and expect this attribute to be present with release 4.8.0.
This pull request is to manually (one-off) add the new linz:slug attribute to all existing collection.json files in the elevation and imagery repositories.
Original motivation for this change is from BM-1076.

Modifications

Added linz:slug attribute to each collection.json file from its location in this repository.

#!/bin/bash
for dir in ./stac/*/*; do
  find $dir -type f -name 'collection.json' -print -exec sed -i 's;  "extent": {;  "linz:slug": "'${dir#./stac/*/}'",\n  "extent": {;g' {} \;
done

Verification

Checked for invalid json using jq

echo "Checking for invalid json files"
shopt -s globstar
for file in ./**/collection.json; do
  jq . "${file}" >/dev/null || echo "failed: ${file}"
done
echo "DONE"

Checked for files containing multiple linz:slug attributes:

echo "Files with number of slugs not equal to 1:"
grep -R --include='collection.json' 'linz:slug' . -c --color=no | grep -v 'n:1$'
echo "END OF LIST"