[vSphere] Support passing of a distributed switch for each interface.
Update excon dependency to version ~>0.26.0
Update vcr dependency to version ~>2.6
Merge pull request #2220 from sferik/update_vcr_dependency

Update vcr dependency to version ~>2.6
Merge pull request #2218 from sferik/update_excon_dependency

Update excon dependency to version ~>0.26.0
Update webmock dependency to version ~>1.14
Merge pull request #2219 from sferik/update_webmock_dependency

Update webmock dependency to version ~>1.14
[google|compute] Fix metadata bug.

Works for when you have metadata, but no sshKeys metadata.
Merge pull request #2221 from icco/master

[google|compute] Fix metadata bug.
Update excon dependency to version ~>0.27.0
Merge pull request #2223 from sferik/update_excon_dependency

Update excon dependency to version ~>0.27.0
Merge pull request #2185 from grimme-atix-de/interface_dswitch

[vSphere] Support passing of a distributed switch for each interface.
[vcloud_director] Use post_undeploy_vapp.