release 1.13.6: env-only machine paths and SSH hosts

Load ~/.config/taler-monitoring/env (taler-monitoring-env profiles)
before suite defaults. Drop hardcoded operator homes and host aliases
from scripts; apply/staging/www/secrets/wallet via env.

android-test/run-goa-gui-chain.sh

@@ -91,7 +91,7 @@ if [[ -z "${EXP_PW_FILE:-}" ]]; then
 fi
 # stage: try stagepaysan secret via ssh if missing
 if [[ ! -f "${EXP_PW_FILE:-}" && "$STACK" = "stage" ]]; then
-  for host in francpaysan-stage-user francpaysan-host; do
+  for host in ${INSIDE_SSH:+"$INSIDE_SSH"} ${FRANCPAYSAN_SSH:+"$FRANCPAYSAN_SSH"}; do
     tmp=$(mktemp)
     if ssh -o BatchMode=yes -o ConnectTimeout=10 "$host" \
       'tr -d "\n\r" </mnt/data/stagepaysan/bank/secrets/bank-explorer-password.txt' \