And I don't know how related, but the engine vm doesn't come up.

Connecting to its vnc console I get it "booting from hard disk" ....:
https://drive.google.com/file/d/0BwoPbcrMv8mvOEJWeVRvNThmTWc/view?usp=sharing

Gluster volume for the engine vm storage domain seems ok...

[root@ovirt01 vdsm]# gluster volume heal engine info
Brick ovirt01.localdomain.local:/gluster/brick1/engine
Status: Connected
Number of entries: 0

Brick ovirt02.localdomain.local:/gluster/brick1/engine
Status: Connected
Number of entries: 0

Brick ovirt03.localdomain.local:/gluster/brick1/engine
Status: Connected
Number of entries: 0

[root@ovirt01 vdsm]#

and in HostedEngine.log

2017-07-09 19:59:20.660+0000: starting up libvirt version: 2.0.0, package: 10.el7_3.9 (CentOS BuildSystem <http://bugs.centos.org>, 2017-05-25-20:52:28, c1bm.rdu2.centos.org), qemu version: 2.6.0 (qemu-kvm-ev-2.6.0-28.el7.10.1), hostname: ovirt01.localdomain.local
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin QEMU_AUDIO_DRV=none /usr/libexec/qemu-kvm -name guest=HostedEngine,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-3-HostedEngine/master-key.aes -machine pc-i440fx-rhel7.3.0,accel=kvm,usb=off -cpu Broadwell,+rtm,+hle -m 6144 -realtime mlock=off -smp 1,maxcpus=16,sockets=16,cores=1,threads=1 -uuid 87fd6bdb-535d-45b8-81d4-7e3101a6c364 -smbios 'type=1,manufacturer=oVirt,product=oVirt Node,version=7-3.1611.el7.centos,serial=564D777E-B638-E808-9044-680BA4957704,uuid=87fd6bdb-535d-45b8-81d4-7e3101a6c364' -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-3-HostedEngine/monitor.sock,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=2017-07-09T19:59:20,driftfix=slew -global kvm-pit.lost_tick_policy=discard -no-hpet -no-reboot -boot strict=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x4 -drive file=/var/run/vdsm/storage/e9e4a478-f391-42e5-9bb8-ed22a33e5cab/cf8b8f4e-fa01-457e-8a96-c5a27f8408f8/94c46bac-0a9f-49e8-9188-627fa0caf2b6,format=raw,if=none,id=drive-virtio-disk0,serial=cf8b8f4e-fa01-457e-8a96-c5a27f8408f8,cache=none,werror=stop,rerror=stop,aio=threads -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive if=none,id=drive-ide0-1-0,readonly=on -device ide-cd,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -netdev tap,fd=30,id=hostnet0,vhost=on,vhostfd=32 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=00:16:3e:0a:e7:ba,bus=pci.0,addr=0x3 -chardev socket,id=charchannel0,path=/var/lib/libvirt/qemu/channels/87fd6bdb-535d-45b8-81d4-7e3101a6c364.com.redhat.rhevm.vdsm,server,nowait -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.rhevm.vdsm -chardev socket,id=charchannel1,path=/var/lib/libvirt/qemu/channels/87fd6bdb-535d-45b8-81d4-7e3101a6c364.org.qemu.guest_agent.0,server,nowait -device virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,id=channel1,name=org.qemu.guest_agent.0 -chardev socket,id=charchannel2,path=/var/lib/libvirt/qemu/channels/87fd6bdb-535d-45b8-81d4-7e3101a6c364.org.ovirt.hosted-engine-setup.0,server,nowait -device virtserialport,bus=virtio-serial0.0,nr=3,chardev=charchannel2,id=channel2,name=org.ovirt.hosted-engine-setup.0 -chardev pty,id=charconsole0 -device virtconsole,chardev=charconsole0,id=console0 -vnc 0:0,password -device cirrus-vga,id=video0,bus=pci.0,addr=0x2 -object rng-random,id=objrng0,filename=/dev/urandom -device virtio-rng-pci,rng=objrng0,id=rng0,bus=pci.0,addr=0x6 -msg timestamp=on
char device redirected to /dev/pts/1 (label charconsole0)
warning: host doesn't support requested feature: CPUID.07H:EBX.erms [bit 9]