bazel: android aar bazel rule fix to output envoy.aar (#973)
bazel: android aar bazel rule fix to output envoy.aar (#973)

We previously outputted `dist/envoy_local.aar` for `bazelisk build android_dist`. This change it is to appropriately name the output to `dist/envoy.aar`

Signed-off-by: Alan Chiu <367bd57b6183fe938da2a8d8d33045b2c3e81d37@lyft.com>

For an explanation of how to fill out the fields, please see the relevant section
in [PULL_REQUESTS.md](https://github.com/envoyproxy/envoy/blob/master/PULL_REQUESTS.md)

Description: bazel: android aar bazel rule fix to output envoy.aar
Risk Level: low
Testing: local
Docs Changes: n/a
Release Notes: n/a
[Optional Fixes #Issue]
[Optional Deprecated:]
envoyproxy/envoy-mobile,envoyproxy/envoy-mobile,envoyproxy/envoy-mobile,envoyproxy/envoy-mobile,envoyproxy/envoy-mobile,envoyproxy/envoy-mobile,envoyproxy/envoy-mobile,envoyproxy/envoy-mobile,envoyproxy/envoy-mobile