AIDEGen: Add the java sources of host java library modules into module-info.json.

Build module-info.json without this change:
Build time: 2m50.172s
File size: 21,598,737 Bytes

Build module-info.json with this change:
Build time: 2m50.428s
File size: 21,977,565 Bytes

Bug: 133148266
Test: 1. Checkout internal branch
      2. Patch this CL
      3. m -j out/target/product/generic_x86_64/module-info.json
      4. Check the java file exists:
         "GtsBackupHostTestCases": {
	     "srcs": [...,
		      ".../BaseBackupRestoreHostSideTest.java",
		      ...]

Change-Id: I1e1b34592cb7d7abd4634d9cb1a3e276bc1dc7f1