Mention --fixed-ip subnet_id=<..> in help message

Improved help message for port-create --fixed-ip subnet_id=<..> case:
 * ensure it's mentioned when no arguments are passed;
 * fixed wording of --help message to make it clear subnet_id may be
   passed without ip_address.

Change-Id: Ie48099e0445f80dbff78766e42bc548f925cd208
Closes-Bug: #1267465
update coveragerc file

fix missing change from quantumclient to neutronclient in .coveragerc
exclude tests from code coverage calculation

Change-Id: Ie286faaaaad9e9bc72c89422ac628178a30ccc8e
Remove vi modelines

We don't need to have the vi modelines in each source file,
it can be set in a user's vimrc if required.

Change-Id: Ic30e91df1b0e25beda9b8d8c19be58573cdae4f6
Closes-Bug: #1229324
Modify quota-list descripton

'quota-list' is truly to descirbe quotas for tenants who have non-default
quota values.

Change-Id: I9b5cc92afda9ec7ace479f456c303a3ecc5672d0
Closes-bug: #1280519
Work around for httplib2 retries on timeout

httplib2 automatically retries a request on a timeout even if the request
is a POST. This can lead to orphaned objects being created that we
don't know about. This patch sets httplib2.RETRIES to 1 to avoid this.

Note: httplib2.RETRIES is only available in new versions of httplib2.
See: https://code.google.com/p/httplib2/issues/detail?id=124 for more
details.

Co-Authored-By: Ashwin Raveendran <ashw7n@gmail.com>
Co-Authored-By: Sudheendra Murthy <sudhi.vm@gmail.com

Change-Id: I5648b644bb9df1fd2ea219159794d9d122696af0
Closes-bug: #1267649
Don't reuse 'body' for response data

It makes diagnostics in debuggers much harder - we can just use a
different variable name instead.

Change-Id: I69367336cbb0f9f302ef8d484a5d504d2b3869bb
Merge "Mention --fixed-ip subnet_id=<..> in help message"
Merge "update coveragerc file"
Merge "Remove vi modelines"
Merge "Modify quota-list descripton"
Merge "Don't reuse 'body' for response data"