cli: Add --tpm backend.encryption.secret=

Signed-off-by: Cole Robinson <crobinso@redhat.com>

tests/cli-test-xml/compare/virt-install-singleton-config-2.xml

@@ -193,6 +193,7 @@
     <tpm model="tpm-crb">
       <backend type="passthrough">
         <device path="/dev/tpm0"/>
+        <encryption secret="11111111-2222-3333-4444-5555555555"/>
       </backend>
     </tpm>
     <graphics type="vnc" port="-1"/>
@@ -433,6 +434,7 @@
     <tpm model="tpm-crb">
       <backend type="passthrough">
         <device path="/dev/tpm0"/>
+        <encryption secret="11111111-2222-3333-4444-5555555555"/>
       </backend>
     </tpm>
     <graphics type="vnc" port="-1"/>

tests/clitest.py

@@ -535,7 +535,7 @@ memnode0.cellid=1,memnode0.mode=strict,memnode0.nodeset=2
 --filesystem /foo/source,/bar/target
 --memballoon virtio,autodeflate=on,stats.period=10
 --watchdog ib700,action=pause
---tpm passthrough,model=tpm-crb,path=/dev/tpm0
+--tpm passthrough,model=tpm-crb,path=/dev/tpm0,backend.encryption.secret=11111111-2222-3333-4444-5555555555
 --rng egd,backend_host=127.0.0.1,backend_service=8000,backend_type=udp,backend_mode=bind,backend_connect_host=foo,backend_connect_service=708,rate.bytes=1234,rate.period=1000,model=virtio
 --panic iobase=0x506
 """, "singleton-config-2")

virtinst/cli.py

@@ -3542,6 +3542,7 @@ class ParserTPM(VirtCLIParser):
         cls.add_arg("backend.type", "type")
         cls.add_arg("backend.version", "version")
         cls.add_arg("backend.device.path", "device_path")
+        cls.add_arg("backend.encryption.secret", "encryption_secret")
 
 
 #################

virtinst/devices/tpm.py

@@ -28,6 +28,7 @@ class DeviceTpm(Device):
     version = XMLProperty("./backend/@version")
     model = XMLProperty("./@model")
     device_path = XMLProperty("./backend/device/@path")
+    encryption_secret = XMLProperty("./backend/encryption/@secret")
 
 
     ##################