The original `tradefed_binary_host` in Soong always used the host OS
architecture when writing the `arch` in `test-suite-info.properties`.
This change introduces the `Suite_arch` attribute in
`tradefed_binary_host`, allowing users to specify the architecture
for `test-suite-info.properties`.
Bug: 313535357
Test: 1. Add property of `suite_arch` in the Android.bp
2. m cts-tradefed
3. check `test-suite-info.properties` in cts-tradefed.jar
Change-Id: Ib95db4e0e8d238c9bb8a2a3fffea606fa6a764ce
Having two packages in the same directory makes it harder for go tools
to understande the directory structure.
For example, in build/soong, "go test ./cc/..." fails with cyclic
package imports.
Bug: n/a
Test: go test ./cc/... (in build/soong)
Change-Id: I7a040bf30b1e001680dd43fed9747e9651372274
