string parameter can't accept unicode

[Ethan Lynn]

If a string parameter receive a unicode, a unicodeerror will raise.
heat stack-create -f ~/Downloads/mytemplates/bug/privateipaddress.template -P "paratest=test♥" test
ERROR: Remote error: UnicodeEncodeError 'ascii' codec can't encode character u'\u2665' in position 4: ordinal not in range(128)

Trace:
2014-06-16 15:20:46.920 ERROR heat.openstack.common.rpc.amqp [req-4f5062cb-e912-4eb8-b27b-7faab90e3581 None demo] Exception during message handling
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp Traceback (most recent call last):
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp File "/opt/stack/heat/heat/openstack/common/rpc/amqp.py", line 462, in _process_data
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp **args)
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp File "/opt/stack/heat/heat/openstack/common/rpc/dispatcher.py", line 172, in dispatch
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp result = getattr(proxyobj, method)(ctxt, **kwargs)
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp File "/opt/stack/heat/heat/engine/service.py", line 61, in wrapped
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp return func(self, ctx, *args, **kwargs)
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp File "/opt/stack/heat/heat/engine/service.py", line 393, in show_stack
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp return [format_stack_detail(s) for s in stacks]
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp File "/opt/stack/heat/heat/engine/service.py", line 391, in format_stack_detail
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp return api.format_stack(stack)
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp File "/opt/stack/heat/heat/engine/api.py", line 91, in format_stack
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp api.STACK_PARAMETERS: stack.parameters.map(str),
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp File "/opt/stack/heat/heat/engine/parameters.py", line 447, in map
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp for n, p in self.params.iteritems() if filter_func(p))
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp File "/opt/stack/heat/heat/engine/parameters.py", line 447, in <genexpr>
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp for n, p in self.params.iteritems() if filter_func(p))
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp File "/opt/stack/heat/heat/engine/parameters.py", line 266, in __str__
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp return str(value)
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp UnicodeEncodeError: 'ascii' codec can't encode character u'\u2665' in position 4: ordinal not in range(128)
2014-06-16 15:20:46.920 TRACE heat.openstack.common.rpc.amqp
2014-06-16 15:20:46.923 ERROR heat.openstack.common.rpc.common [req-4f5062cb-e912-4eb8-b27b-7faab90e3581 None demo] Returning exception 'ascii' codec can't encode character u'\u2665' in position 4: ordinal not in range(128) to caller

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/100178

[Ethan Lynn (ethanlynn)]

patch for heatclient
https://review.openstack.org/#/c/100191/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/100178
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=7b8d32d58195a2b9098c837fe997d334e2529b8d
Submitter: Jenkins
Branch: master

commit 7b8d32d58195a2b9098c837fe997d334e2529b8d
Author: Ethan Lynn <email address hidden>
Date: Mon Jun 16 13:57:50 2014 +0800

    Fix String Parameter Receive a unicode

    Add unicode encode to parameter to make sure unicode will be
    accepted correctly.

    Change-Id: Idc9afad7971eaf0320d719946a3f09b8e15c1479
    Closes-Bug: #1330370

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/icehouse
Review: https://review.openstack.org/101418

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/101418
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=57f8eaa19b27513aa3f268775c84340187bc8ef9
Submitter: Jenkins
Branch: stable/icehouse

commit 57f8eaa19b27513aa3f268775c84340187bc8ef9
Author: Ethan Lynn <email address hidden>
Date: Mon Jun 16 13:57:50 2014 +0800

    Fix String Parameter Receive a unicode

    Add unicode encode to parameter to make sure unicode will be
    accepted correctly.

    Change-Id: Idc9afad7971eaf0320d719946a3f09b8e15c1479
    Closes-Bug: #1330370
    (cherry picked from commit 7b8d32d58195a2b9098c837fe997d334e2529b8d)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/100191
Committed: https://git.openstack.org/cgit/openstack/python-heatclient/commit/?id=99b1536785ef986acf053fa958f51fb24923f171
Submitter: Jenkins
Branch: master

commit 99b1536785ef986acf053fa958f51fb24923f171
Author: Ethan Lynn <email address hidden>
Date: Mon Jun 16 16:33:23 2014 +0800

    Fix unicode display in parameters

    When parameters contain unicode, stack-show will display unicode
    as '\u2665'. It's not easy to read by human.
    This change will change '\u2665' to readable unicode char '♥' when
    display to users.

    Change-Id: I00a74943138b292b71f848966ee64a658be64bc2
    Partial-Bug: #1330370