edit-securitygroup-rules cannot clear out field

[bvanhav]

Please triple-check to make sure that you have properly masked out user credentials like usernames, passwords and API keys before submitting your issue

Expected Behavior

When editing a security group rule using the SLDN API, a string field (for example remote_ip) can be cleared by passing in an empty string. If an empty string is passed to the network manager edit_securitygroup_rule, that empty string should be passed to SLDN and the field cleared.

Actual Behavior

The empty string is not passed to SLDN and the 'edited' rule returns with the 'cleared' field still set to its original value.

Environment Information

Operating System:
softlayer-python version (slcli --version): 5.2.14

[allmightyspiff]

This fix has been merged. Should be included in 5.4.1