AJ-1602: use setBearerToken instead of setAccessToken for cWDS

[davidangb]

cWDS client needs to use setBearerToken instead of setAccessToken.

See also:
DataBiosphere/terra-workspace-data-service#389
DataBiosphere/terra-workspace-data-service#335

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I, the developer opening this PR, do solemnly pinky swear that:

• I've followed the instructions if I've made any changes to the API, especially if they're breaking changes
• I've updated the RC_XXX release ticket with any manual steps required to release this change
• I've updated the FISMA documentation if I've made any security-related changes, including auth, encryption, or auditing

In all cases:

• Get two thumbsworth of review and PO signoff if necessary
• Verify all tests go green
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[yuliadub]

this one keeps getting us! thanks for catching it!