Fix delay load dll

[SergeyRyabinin]

Issue #, if available:
#2789 Static ALLOCATION_TAG and SERVICE_NAME symbols break DelayLoadDLLs on windows

This fixes the regression for the given usecase I introduced back in #2157
Description of changes:
Do not expose static const variables from headers
Set few integration tests to test this config
Check all that applies:

• Did a review by yourself.
• Added proper tests to cover this PR. (If tests are not applicable, explain.)
• Checked if this PR is a breaking (APIs have been changed) change.
• Checked if this PR will not introduce cross-platform inconsistent behavior.
• Checked if this PR would require a ReadMe/Wiki update.

Check which platforms you have built SDK on to verify the correctness of this PR.

• Linux
• Windows
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