fix: enable more linting

[SiasMey]

Description

• fix: make the return lint happy
• style: add empty line before return statements
• chore: update linter list
• fix: many http body left open memory leaks
• fix: ignore some false positives from gosec
• style: fix var names to follow style guidelines
• fix: undo body.Close to find segfault
• fix: close http response in client tests
• fix: close a few more http clients
• fix: and close some more
• fix: close responses in live tests
• fix: close responses in agent_group_assignment
• fix: close responses in agent_group_assignments
• fix: close response in service_group_assignments
• fix: close responses in wireless_networks
• fix: close response in service_test_groups
• fix: close response in senso_group_assignments
• fix: close most resonpses in resoruce_group
• fix: close responses in network_group_assignments
• fix: close the reamining provider http responses
• fix: close results in live tests
• *refactor: use error instead of string in response
• fix: move defer to below error check
• fix: move defer to after nil check for http response
• chore: update lint config
• chore: update linting config to enable ireturn

Related Issue(s)

• https://jira.arubanetworks.com/browse/UXI-9700

[brandon-piner-aruba]

Great stuff. More go'ish