Make change and version bump to r_aml_300803100 for mainline module file: packages/Tethering/apex/manifest.json

Change-Id: Ic3a9e3a3345dac2b176f71c81b9a274ae650289b
tree: 4baf6bc98b04e31a28dda69ccc64d2d1d14111b9
  1. Tethering/