Adding option to update lavamoat policies in parallel (#14536)

Co-authored-by: brad-decker <bhdecker84@gmail.com>

development/generate-lavamoat-policies.sh

@@ -4,9 +4,16 @@ set -e
 set -u
 set -o pipefail
 
+extraArgs=()
+if [[ $# -lt 1 ]]; then
+    extraArgs+=(-m 1)
+fi
+
 # Generate LavaMoat policies for the extension background script for each build
 # type.
 # ATTN: This may tax your device when running it locally.
-WRITE_AUTO_POLICY=1 yarn build scripts:prod --policy-only &&
-WRITE_AUTO_POLICY=1 yarn build scripts:prod --policy-only --build-type beta &&
-WRITE_AUTO_POLICY=1 yarn build scripts:prod --policy-only --build-type flask
+concurrently --kill-others-on-fail -n main,beta,flask \
+    "${extraArgs[@]}" \
+    "WRITE_AUTO_POLICY=1 yarn build scripts:prod --policy-only" \
+    "WRITE_AUTO_POLICY=1 yarn build scripts:prod --policy-only --build-type beta" \
+    "WRITE_AUTO_POLICY=1 yarn build scripts:prod --policy-only --build-type flask"

package.json

@@ -73,6 +73,7 @@
     "lavamoat:build:auto": "yarn lavamoat:build --writeAutoPolicy",
     "lavamoat:debug:build": "yarn lavamoat:build --writeAutoPolicyDebug --policydebug lavamoat/build-system/policy-debug.json",
     "lavamoat:background:auto": "./development/generate-lavamoat-policies.sh",
+    "lavamoat:background:auto:dev": "./development/generate-lavamoat-policies.sh --dev",
     "lavamoat:auto": "yarn lavamoat:build:auto && yarn lavamoat:background:auto"
   },
   "resolutions": {