devtool/sdk: Run build-sysroots after installing new things

After running sdk-install we need to ensure that the standalone sysroots are
updated as done when the eSDK is originally built. Add such a call so this
happens automatically and the envrionment scripts in the SDK work correctly
after updates.

(From OE-Core rev: 4f422071d6f9a074986f399d9e648977bd2e0a68)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/lib/devtool/sdk.py

@@ -306,6 +306,12 @@ def sdk_install(args, config, basepath, workspace):
         if failed:
             return 2
 
+        try:
+            exec_build_env_command(config.init_path, basepath, 'bitbake build-sysroots', watch=True)
+        except bb.process.ExecutionError as e:
+            raise DevtoolError('Failed to bitbake build-sysroots:\n%s' % (str(e)))
+
+
 def register_commands(subparsers, context):
     """Register devtool subcommands from the sdk plugin"""
     if context.fixed_setup: