use version 27.0.1-jre of guava instead of 27.0.1-android

[dbyron0]

The dependency on guava 27.0.1-android instead of 27.0.1-jre is causing problems in a gradle project that uses swagger-core 1.5.22. With the android guava, I get errors like:

* What went wrong:
A problem occurred configuring project ':app'.
> Failed to notify project evaluation listener.
   > Could not create task ':app:extractDebugAnnotations'.
      > com.google.common.collect.ImmutableList.toImmutableList()Ljava/util/stream/Collector;
   > com.google.common.collect.ImmutableList.toImmutableList()Ljava/util/stream/Collector;

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

This error goes away with 27.0.1-jre. google/guava#2914 explains a bit about why.

I'm a little confused how we got to the android version in the first place. #3122 is the PR that did it, motivated by #3079, but there's another PR linked to that issue that made a change against master (#3121) that used 27.0.1-jre.

Thanks for your help.

[dbyron0]

OK, I see that sticking with java 7 is the likely motivation here....Leaving open for awhile in case there are more comments.

[frantuma]

It's as you mention in your comment, please check #3122 (comment) and #3122 (comment) for motivation and usage of different version if needed. Closing PR, please reopen if you're still experiencing issues

[dbyron0]

Thanks for the links. They help close the loop.