Retry wget tasks while building the Docker image

[dliappis]

This was noticed in https://gradle-enterprise.elastic.co/s/trrgg7tocnkw2

with the excerpt showing:

Step 8/48 : RUN wget "https://daniel.haxx.se/mykey.asc" -O "curl-gpg.pub" &&     wget "${TARBALL_URL}.asc" -O "${TARBALL_PATH}.asc" &&     wget "${TARBALL_URL}" -O "${TARBALL_PATH}"
 ---> Running in 517685c84ec3
Connecting to daniel.haxx.se (159.253.31.95:443)
ssl_client: daniel.haxx.se: certificate verification failed: self signed certificate
wget: error getting response: Connection reset by peer
The command '/bin/sh -c wget "https://daniel.haxx.se/mykey.asc" -O "curl-gpg.pub" &&     wget "${TARBALL_URL}.asc" -O "${TARBALL_PATH}.asc" &&     wget "${TARBALL_URL}" -O "${TARBALL_PATH}"' returned a non-zero code: 1

but looking at the [Dockerfile[(https://github.com/elastic/elasticsearch/blob/f491422e1edf79ea08d5657b5035f4a5ee444442/distribution/docker/src/docker/Dockerfile#L65-L67) it appears we aren't retrying while attempting to download with wget.

We should ensure we are trying similarly to how we do things elsewhere e.g.

elasticsearch/distribution/docker/src/docker/Dockerfile

Lines 215 to 220 in f491422

	RUN for iter in {1..10}; do \\
	${package_manager} update --setopt=tsflags=nodocs -y && \\
	${package_manager} install --setopt=tsflags=nodocs -y \\
	nc shadow-utils zip unzip findutils procps-ng && \\
	${package_manager} clean all && exit_code=0 && break || exit_code=\$? && echo "${package_manager} error: retry \$iter in 10s" && \\
	sleep 10; \\

and

elasticsearch/distribution/docker/src/docker/Dockerfile

Line 41 in f491422

curl --retry 8 -S -L -O https://github.com/krallin/tini/releases/download/v0.19.0/\${tini_bin} ; \\

[elasticmachine]

Pinging @elastic/es-core-infra (:Core/Infra/Packaging)