Fix return for place connection

[congwang09]

Resolves: #230

Fix return for place_connection(). In the future, the connection ID should be returned, to be used when we delete connection. Will address in a follow up PR.

[coveralls]

Pull Request Test Coverage Report for Build 7904583842

Details

• -1 of 1 (0.0%) changed or added relevant line in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 38.214%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
sdx_controller/handlers/connection_handler.py	0	1	0.0%

Totals
Change from base Build 7881174666:	0.0%
Covered Lines:	609
Relevant Lines:	1432

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💛 - Coveralls