RDISCROWD-8392: deprecate old boto. use boto3 only

[dchhabda]

Issue number of the reported bug or feature request: #

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[coveralls]

Pull Request Test Coverage Report for Build 19204199042

Details

• 94 of 107 (87.85%) changed or added relevant lines in 5 files are covered.
• 3 unchanged lines in 2 files lost coverage.
• Overall coverage decreased (-0.02%) to 94.044%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pybossa/cloud_store_api/connection.py	84	97	86.6%

Files with Coverage Reduction	New Missed Lines	%
pybossa/cloud_store_api/connection.py	1	88.41%
pybossa/cloud_store_api/base_conn.py	2	68.38%

Totals
Change from base Build 18789800363:	-0.02%
Covered Lines:	17890
Relevant Lines:	19023

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💛 - Coveralls