[pegleg] - set passphrase and salt to pegleg

Setting PEGLEG_PASSPHRASE and PEGLEG_SALT to pegleg container
to use it for encryption/decryption.

Change-Id: I2c5c01fb0ef7366dbc35d4f8730ac1aa9ca63db1

tools/multi_nodes_gate/airship_gate/stages/pegleg-collect.sh

@@ -69,6 +69,8 @@ collect_design_docs() {
     -v "${HOME}/.ssh":/root/.ssh \
     -v "${REPO_ROOT}":/workspace \
     -v "${DEFINITION_DEPOT}":/collect \
+    -e "PEGLEG_PASSPHRASE=$PEGLEG_PASSPHRASE" \
+    -e "PEGLEG_SALT=$PEGLEG_SALT" \
     "${IMAGE_PEGLEG_CLI}" \
     $(render_pegleg_cli)
 }

tools/multi_nodes_gate/airship_gate/stages/pegleg-render.sh

@@ -69,6 +69,8 @@ collect_rendered_doc() {
     -v "${HOME}/.ssh":/root/.ssh \
     -v "${REPO_ROOT}":/workspace \
     -v "${RENDERED_DEPOT}":/collect \
+    -e "PEGLEG_PASSPHRASE=$PEGLEG_PASSPHRASE" \
+    -e "PEGLEG_SALT=$PEGLEG_SALT" \
     "${IMAGE_PEGLEG_CLI}" \
     $(render_pegleg_cli)
 }