HttpBackOffIOExceptionHandler and HttpBackOffUnsuccessfulResponseHandler do not restore the interrupted status after catching InterruptionException

[micheldavid]

I found this by accident while looking at a different unexpected behavior within my system.

google-http-java-client/google-http-client/src/main/java/com/google/api/client/http/HttpBackOffIOExceptionHandler.java

Line 100 in 8760ff0

return false;

While handling IOException, the HttpBackOffIOExceptionHandler does not rethrow an exception and also does not reset the thread interrupted bit after catching InterruptedException.

See article with explanation: https://dzone.com/articles/why-do-we-need-threadcurrentthreadinterrupt-in-int

Environment details

1. Specify the API: GCS objects list
2. OS type and version: Debian
3. Java version: Java 8
4. google-http-client version(s): 1.34.2