The lxc contoller eventually makes use of virRandomBits(), which was
segfaulting since virRandomInitialize() is never invoked.

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff554d560 in random_r () from /lib64/libc.so.6
(gdb) bt
0  0x00007ffff554d560 in random_r () from /lib64/libc.so.6
1  0x0000000000469eaa in virRandomBits (nbits=32) at util/virrandom.c:80
2  0x000000000045bf69 in virHashCreateFull (size=256,
    dataFree=0x4aa2a2 <hashDataFree>, keyCode=0x45bd40 <virHashStrCode>,
    keyEqual=0x45bdad <virHashStrEqual>, keyCopy=0x45bdfa <virHashStrCopy>,
    keyFree=0x45be37 <virHashStrFree>) at util/virhash.c:134
3  0x000000000045c069 in virHashCreate (size=0, dataFree=0x4aa2a2 <hashDataFree>)
    at util/virhash.c:164
4  0x00000000004aa562 in virNWFilterHashTableCreate (n=0)
    at conf/nwfilter_params.c:686
5  0x00000000004aa95b in virNWFilterParseParamAttributes (cur=0x711d30)
    at conf/nwfilter_params.c:793
6  0x0000000000481a7f in virDomainNetDefParseXML (caps=0x702c90, node=0x7116b0,
    ctxt=0x7101b0, bootMap=0x0, flags=0) at conf/domain_conf.c:4589
7  0x000000000048cc36 in virDomainDefParseXML (caps=0x702c90, xml=0x710040,
    root=0x7103b0, ctxt=0x7101b0, expectedVirtTypes=16, flags=0)
    at conf/domain_conf.c:8658
8  0x000000000048f011 in virDomainDefParseNode (caps=0x702c90, xml=0x710040,
    root=0x7103b0, expectedVirtTypes=16, flags=0) at conf/domain_conf.c:9360
9  0x000000000048ee30 in virDomainDefParse (xmlStr=0x0,
    filename=0x702ae0 "/var/run/libvirt/lxc/x.xml", caps=0x702c90,
    expectedVirtTypes=16, flags=0) at conf/domain_conf.c:9310
10 0x000000000048ef00 in virDomainDefParseFile (caps=0x702c90,
    filename=0x702ae0 "/var/run/libvirt/lxc/x.xml", expectedVirtTypes=16, flags=0)
    at conf/domain_conf.c:9332
11 0x0000000000425053 in main (argc=5, argv=0x7fffffffe2b8)
    at lxc/lxc_controller.c:1773