ssi_all: use triple-brace templating - #11284

The mustache templating system used by ingest pipelines has two levels of
escaping available, not escaped (triple stache) and HTML escaped
(double stache) — see man mustache[1] under "tag types: variables". This can
lead to data corruption, particularly in cases where an operating system has
chosen to use a character requiring escaping in its path syntax.

The cloudflare package is omitted from this set of changes due to ci
difficulties with its system tests.

[1]http://mustache.github.io/mustache.5.html

[git-generate]
for f in $(
	(
		for p in $(
			yq 'select(.owner.github == "elastic/security-service-integrations")|.name' packages/**/manifest.yml \
			| grep -v -- '---'
		); do
			rg -l -g '*.yml' ": ('\{\{[^{][ .a-zA-Z0-9_]*[^}]}}'|\"\{\{[^{][ .a-zA-Z0-9_]*[^}]}}\")" packages/$p
		done
	)|grep -v "cloudflare"|grep "elasticsearch/ingest_pipeline"|sort|uniq
); do
	sed -i -r "s/: (['\"])\{\{([^{][ .a-zA-Z0-9_]*[^}])}}['\"]/: \1{{{\2}}}\1/g" $f
done
for p in $(git diff --name-only HEAD~1|cut -d/ -f1,2|sort|uniq); do
	(
		cd $p
		elastic-package test pipeline -g
		elastic-package changelog add \
			--description "Use triple-brace Mustache templating when referencing variables in ingest pipelines." \
			--type bugfix \
			--next patch \
			--link elastic#11284
	)>/dev/null 2>&1
done

The mustache templating system used by ingest pipelines has two levels of
escaping available, not escaped (triple stache) and HTML escaped
(double stache) — see man mustache[1] under "tag types: variables". This can
lead to data corruption, particularly in cases where an operating system has
chosen to use a character requiring escaping in its path syntax.

The cloudflare package is omitted from this set of changes due to ci
difficulties with its system tests.

[1]http://mustache.github.io/mustache.5.html

[git-generate]
for f in $(
	(
		for p in $(
			yq 'select(.owner.github == "elastic/security-service-integrations")|.name' packages/**/manifest.yml \
			| grep -v -- '---'
		); do
			rg -l -g '*.yml' ": ('\{\{[^{][ .a-zA-Z0-9_]*[^}]}}'|\"\{\{[^{][ .a-zA-Z0-9_]*[^}]}}\")" packages/$p
		done
	)|grep -v "cloudflare"|grep "elasticsearch/ingest_pipeline"|sort|uniq
); do
	sed -i -r "s/: (['\"])\{\{([^{][ .a-zA-Z0-9_]*[^}])}}['\"]/: \1{{{\2}}}\1/g" $f
done
for p in $(git diff --name-only HEAD~1|cut -d/ -f1,2|sort|uniq); do
	(
		cd $p
		elastic-package test pipeline -g
		elastic-package changelog add \
			--description "Use triple-brace Mustache templating when referencing variables in ingest pipelines." \
			--type bugfix \
			--next patch \
			--link elastic#11284
	)>/dev/null 2>&1
done