[vsphere|compute] cleanup merge conflicts with clone method
Assign service to clone_result before new instance of vm
Semantic Versioning (and Pessimistic Versioning Constraint) notice

I noticed some projects using Fog are setting very specific versioning constraint.  For example, https://github.com/mitchellh/vagrant-rackspace/issues/34 happened because both vagrant-aws and vagrant-rackspace are using 3 digits of precision.

The fog RELEASE.md says that Fog follows semantic versioning.  Several other projects have put up notices suggesting to use 2 digits of precision for projects that follow semver.  See https://github.com/intridea/multi_json, for example.

I added a similar notice, but softened the language because I don't think there is a clear understanding on what semantic versioning means for a project like Fog, which has multiple providers backed by services that are all evolving at their own pace.
Scope the Unicode module so NameErrors make more sense.
Handle another case of the 'unicode' gem breaking things on JRuby.

This is was an omission from pull request #2315.
Merge pull request #2318 from nirvdrum/more_unicode_jruby_cleanup

More unicode jruby cleanup.
Added a JRuby workaround in a test that's failing due to a JRuby bug.
Bound the 'myns' XML namespace to keep Nokogiri on JRuby happy.

It appears JRuby's Nokogiri implementation is strict about using unbound XML namespaces.  Since a well-formed doc should have bound namespaces, I just added it here.
Merge pull request #2319 from nirvdrum/jruby_test_fixes

JRuby test fixes.
Replaced the 'unicode' gem with 'unf' so it'll work with JRuby.

Fixes #2279: Remove dependency on "unicode" gem.
Add EnableLogging field to FirewallService XML
Merge pull request #2313 from maxlinc/patch-1

Semantic Versioning (and Pessimistic Versioning Constraint) recommendation
Made the 'unf' dependency optional.

If you don't have 'unf' installed and you use an AWS adapter, you'll get a message about how your strings might not be properly escaped.  If the gem is available, we'll use it.
Merge pull request #2320 from nirvdrum/replace_unicode_with_unf

Replaced the 'unicode' gem with 'unf' so it'll work with JRuby.
Added a development dependency on 'unf' so the AWS escaping tests will pass.
Create a Snapshot based on a Disk
aws/compute: Hotfix, wrong Name argument for copy_image
Merge pull request #2106 from maginatics/gce_create_snapshot

[google|compute] Create a Snapshot based on a Disk
Don't ignore JRuby failures in Travis any longer, since all known ones have been addressed.
Merge pull request #2321 from alphagov/firewall_enable_logging

[vcloud_director] Add EnableLogging field to FirewallService XML