Node Devices: Fix nodedev-list for fc_host & vports.

In a system with Fiber Channel Host Adapters, a query to list all Fibre Channel
HBAs OR Vports currently returns empty list:
  $ virsh nodedev-list --cap fc_host

  $

Libvirt correctly discovers properties for all HBAs. However, the reporting
fails because of incorrect flag comparison while filtering these types.

This is fixed by removing references to 'VIR_CONNECT_LIST_NODE_DEVICES_CAP_*'
for comparison and replacing those with 'VIR_NODE_DEV_CAP_*'

Introduced by original commit id '652a2ec6'

Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
qemu: Make virFileFindHugeTLBFS fault tolerant

Since commit be0782e1 we are parsing /proc/meminfo to find out the
default huge page size. However, if the host we are running at does
not support any huge pages (e.g. CONFIG_HUGETLB_PAGE is turned off),
we will not successfully parse the meminfo file and hence the whole
qemu driver init process fails. Moreover, the default huge page size
is needed if and only if there's at least one hugetlbfs mount point.
So the fix consists of moving the virFileGetDefaultHugepageSize
function call after the first hugetlbfs mount point is found.

With this fix, we fail to start with one or more hugetlbfs mounts and
malformed meminfo file, but that's expected (how can one mount
hugetlbfs without kernel supporting huge pages?). Workaround in that
case is to umount all the hugetlbfs mounts.

Reported-by: Jim Fehlig <jfehlig@suse.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
snapshot: conf: Enforce absolute paths on disk and memory images

RNG schema as well as the qemu driver requires absolute paths for memory
and disk snapshot image files but the XML parser was not enforcing it.
Add checks to avoid problems in qemu where the configuration it creates
is invalid.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1126329
audit: Fix some comments

Fix a comment in virDomainAuditNetDevice.
Fix a typo in comment of qemuPhysIfaceConnect which is
the caller of virDomainAuditNetDevice.

Signed-off-by: Wang Rui <moon.wangrui@huawei.com>
daemon: Fix indentation in libvirtd.c

Signed-off-by: Wang Rui <moon.wangrui@huawei.com>