[jclouds] Fix Java 7 build issues (#630)

[Andrew Gaul <no...@github.com>]

We should always build the filesystem blobstore.  Also configure animal-sniffer for OkHttp.

References [JCLOUDS-797](https://issues.apache.org/jira/browse/JCLOUDS-797).
You can merge this Pull Request by running:

  git pull https://github.com/andrewgaul/jclouds java7

Or you can view, comment on it, or merge it online at:

  https://github.com/jclouds/jclouds/pull/630

-- Commit Summary --

  * Always build filesystem provider
  * Configure animal sniffer for okhttp driver

-- File Changes --

    M apis/pom.xml (12)
    M drivers/okhttp/pom.xml (16)

-- Patch Links --

https://github.com/jclouds/jclouds/pull/630.patch
https://github.com/jclouds/jclouds/pull/630.diff

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Re: [jclouds] Fix Java 7 build issues (#630)

[Ignasi Barrera <no...@github.com>]

OkHttp should be compatibla with Java 6. They also use this plugin to make sure they don't use signatures from java > 6:
https://github.com/square/okhttp/blob/master/pom.xml#L191-210

It should be OK (and we must try) to enforce java6 with animal sniffer everywhere except in the filesystem provider.

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Re: [jclouds] Fix Java 7 build issues (#630)

[Andrew Gaul <no...@github.com>]

Abandoned OkHttp commit and pushed filesystem commit to master as 38ae98e409802ebb2318f58a6395b8b9c21fedd0.

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Re: [jclouds] Fix Java 7 build issues (#630)

[Ignasi Barrera <no...@github.com>]

The animal sniffer config must be removed from the okhttp driver. We need to ensure it can run on android and others. Enforcing that there are only java 6 signatures in use is a must.

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Re: [jclouds] Fix Java 7 build issues (#630)

[Andrew Gaul <no...@github.com>]

@nacx I do no understand your comment; OkHttp requires Java 7 Path and thus using animal-sniffer should only enforce that the module does not use features from Java 8 and onwards?

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