Log message printed for unhandled exception is not very helpful.

[Venkatesh Sampath]

Currently, on an unhandled exception, the error message logged through sys.excepthook is not very helpful.

Currently it prints only the exception_value.
https://github.com/openstack/oslo-incubator/blob/master/openstack/common/log.py#L396

Fix:
Make the log message print both the exception_type and exception_value of the unhandled exception.

PS: Currently the traceback is printed only when the VERBOSE is ON.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/64820

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/64820
Committed: https://git.openstack.org/cgit/openstack/oslo-incubator/commit/?id=d292f7d8b0d20a29829d37aab158b38028f010c6
Submitter: Jenkins
Branch: master

commit d292f7d8b0d20a29829d37aab158b38028f010c6
Author: Venkatesh Sampath <email address hidden>
Date: Fri Jan 3 15:29:22 2014 +0530

    Add error type to unhandled exception log message

    Whenever an unhandled exception is thrown, only the exception value is printed
    as part of the log message. Printing just the value is sometimes not very
    helpful to identify the problem. eg., in case of KeyError, only the 'key_name'
    would be printed as part of the log message.
    This commit includes the exception type along with value while logging an
    unhandled exception.

    Change-Id: Ibf00173a07510b2ec0c81a29624004f17810a4e4
    Closes-Bug: #1265561

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/68080

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/68083

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/68080
Committed: https://git.openstack.org/cgit/openstack/glance/commit/?id=5f56945157f94e71ca02a4b86a2d6528afc99058
Submitter: Jenkins
Branch: master

commit 5f56945157f94e71ca02a4b86a2d6528afc99058
Author: Venkatesh Sampath <email address hidden>
Date: Tue Jan 21 15:59:56 2014 +0530

    Sync unhandled exception logging change from Oslo

    copy changes from 1 Oslo commit: Ibf00173a07510b2ec0c81a29624004f17810a4e4
    This is related to the bug fix for adding error type to unhandled
    exception log message

    Change-Id: I5645894aad5944f6a91032ae9ac1f2a0904661f7
    Closes-Bug: #1265561