swift flag: handle XML in help strings
swift flag: handle XML in help strings

Some swift help strings use XML tags that were not properly managed and
resulted in truncated string. This patch workarounds the problem by
dropping the XML flags.

Change-Id: I13ba4a9a840c93e3933bbeaaec2d84651efeff2e

savinash47/openstack-doc-tools,openstack/openstack-doc-tools,openstack/openstack-doc-tools,savinash47/openstack-doc-tools,savinash47/openstack-doc-tools