[Libguestfs] [PATCH 0/4] Various p2v fixes and features

A mixed bag, but all the patches make sense together! Patch 1: Fix a bug that Tingting found: https://bugzilla.redhat.com/show_bug.cgi?id=1256222 Patch 2: Revert a patch that makes no sense now that we've added virt-v2v into base RHEL. This is just included because it's a cleanup needed before applying patch 3. Patch 3: Add the ability to use SSH identities (private keys) for virt-p2v to authenticate with the conversion server (as a possibly more secure alternative to passwords). Patch 4: Test the bug fixed in patch 1, which involves for various convoluted reasons using SSH identities. Rich.