fix(toolchains): use posix-compatible exec -a alternative #3010
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The `exec -a` command doesn't work in dash, the default shell for Ubuntu/debian. To work around, use `sh -c`, which is posix and dash compatible. This allows changing the argv0 while invoking a different command. Also adds a test to verify the the runtime_env toolchain works with bootstrap script. Fixes #3009 (cherry picked from commit c4543cd)
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The
exec -acommand doesn't work in dash, the default shell for Ubuntu/debian.To work around, use
sh -c, which is posix and dash compatible. This allows changingthe argv0 while invoking a different command. Also adds a test to verify the the
runtime_env toolchain works with bootstrap script.
Fixes #3009