Push perf test results to slack app (#6371)

* Add script to publish testnet results to slack

* Obscure webhook URL

* fixup

* Replace read with cat redirection

* Turn back on net restart

* Pick nits

* Make symlink before trying to delete its contents

* Display test config in slack and pick Trents nit not to maybe rm -rf /*

* Clean up results print

* Minor nits

* Turn the test settings back up to 11

* typo

* Shellcheck

* Just a few more fields

* fix payload formatting

* Del clear-config.sh

* Mount secondary

* Add commit SHA link and Grafana time range URL

* Add fancy buttons instead of text URLs

* Tighten up test config display

* Fixup display nits

* chellsheck

* Rebase and fix typo

net/remote/remote-node.sh

@@ -152,6 +152,7 @@ EOF
     set -x
     if [[ $skipSetup != true ]]; then
       clear_config_dir "$SOLANA_CONFIG_DIR"
+      setup_secondary_mount
 
       if [[ -n $internalNodesLamports ]]; then
         echo "---" >> config/fullnode-balances.yml
@@ -248,6 +249,7 @@ EOF
     fi
     if [[ $skipSetup != true ]]; then
       clear_config_dir "$SOLANA_CONFIG_DIR"
+      setup_secondary_mount
       [[ -z $internalNodesLamports ]] || net/scripts/rsync-retry.sh -vPrc \
       "$entrypointIp":~/solana/config/fullnode-"$nodeIndex"-identity.json config/fullnode-identity.json
     fi