[5.5.x] Bump Go version to 1.17.5

[bernardjkim]

Description

Bump go version to 1.17.5.

Go 1.14 adds -d=checkptr as a compile-time option for adding instrumentation to check that Go code is following unsafe.Pointer safety rules dynamically. This option is enabled by default (except on Windows) with the -race or -msan flags, and can be disabled with -gcflags=all=-d=checkptr=0.

This lead to failed test cases related to some older dependencies. Disabling the check for now.

Go 1.17 changed how filenames were parsed in multipart forms golang/go#45789. Filename no longer includes directory path in filename. dd03d1e adds a workaround to this change.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• Internal change (not necessarily a bug fix or a new feature)

Linked tickets and other PRs

• Refs Tracking: golang CVE CVE-2021-44716 / CVE-2021-44717 #2693
• Requires [5.5.x] Bump go to 1.17.5 planet#874
• Ports Bump go version to 1.17.5 #2694

TODOs

• Self-review the change
• Perform manual testing
• Address review feedback
• Update upstream references / tags / versions after upstream PR merges (linked above)

Testing

• Basic manual testing by installing a cluster and joining nodes.

[wadells]

We can probably close this, per 5.5's deprecation in #2719.