skip soong tests by default for b command

It doesn't really make sense to incur the cost of running Soong tests to
Bazel users. We can shave off 20 seconds from the local critical path
during clean builds (or if Soong itself has changed) by enabling
--skip-soong-tests in the b command.

Test: b build '...'
Test: b build '...' --run-soong-tests
Bug: 240231596
Change-Id: I2325e1992099534b41ae996cee99e126a12f3c62

envsetup.sh

@@ -1838,10 +1838,20 @@ function _trigger_build()
 # Convenience entry point (like m) to use Bazel in AOSP.
 function b()
 (
+    # Look for the --run-soong-tests flag and skip passing --skip-soong-tests to Soong if present
+    local bazel_args=""
+    local skip_tests="--skip-soong-tests"
+    for i in $@; do
+        if [[ $i != "--run-soong-tests" ]]; then
+            bazel_args+="$i "
+        else
+            skip_tests=""
+        fi
+    done
     # Generate BUILD, bzl files into the synthetic Bazel workspace (out/soong/workspace).
     _trigger_build "all-modules" bp2build USE_BAZEL_ANALYSIS= || return 1
     # Then, run Bazel using the synthetic workspace as the --package_path.
-    if [[ -z "$@" ]]; then
+    if [[ -z "$bazel_args" ]]; then
         # If there are no args, show help.
         bazel help
     else
@@ -1851,7 +1861,7 @@ function b()
         # b run //foo -- --args-for-foo
         local config_set=0
         local bazel_args_with_config=""
-        for arg in $@; do
+        for arg in $bazel_args; do
             if [[ $arg == "--" && $config_set -ne 1 ]]; # if we find --, insert config argument here
             then
                 bazel_args_with_config+="--config=bp2build -- "