Use https to download apr (#668)
Use https to download apr (#668)

Motivation:

We should use https to download dependencies.

Modifications:

Switch to https when downloading apr

Result:

Fixes https://github.com/netty/netty-tcnative/issues/667
netty/netty-tcnative,netty/netty-tcnative,netty/netty-tcnative,netty/netty-tcnative