Fix compatibility of libzstd with different gcc version

[amyangfei]

What problem does this PR solve?

• Fix CI warning cdc.test: Symbol 'stderr' causes overflow in R_X86_64_PC32 relocation

• Fix build failure with some GCC version, such as with `gcc version 9.3.0 (on Ubuntu 20.04.1 LTS)·

/home/apple/.gvm/gos/go1.14.6/pkg/tool/linux_amd64/link: running gcc failed: exit status 1
/usr/bin/ld: /home/apple/.gvm/pkgsets/go1.14.6/global/pkg/mod/github.com/valyala/gozstd@v1.7.0/libzstd_linux_amd64.a(zdict.o): relocation R_X86_64_PC32 against symbol `stderr@@GLIBC_2.2.5' can not be used when making a PDE object; recompile with -fPIE
/usr/bin/ld: final link failed: bad value
collect2: error: ld returned 1 exit status

NOTE: this fix can be removed after we upgrade https://github.com/apache/pulsar-client-go to latest version

What is changed and how it works?

Compile libzstd.a based on https://github.com/valyala/gozstd#faq

Check List

Tests

• Unit test
• Integration test

Release note

• No release note

[amyangfei]

/run-integration-tests

[codecov-commenter]

Codecov Report

Merging #834 into master will increase coverage by 0.0093%.
The diff coverage is n/a.

@@               Coverage Diff                @@
##             master       #834        +/-   ##
================================================
+ Coverage   32.3761%   32.3854%   +0.0092%     
================================================
  Files            97         97                
  Lines         10761      10761                
================================================
+ Hits           3484       3485         +1     
+ Misses         6941       6940         -1     
  Partials        336        336                

[amyangfei]

/run-integration-tests

[overvenus]

/lgtm

[zier-one]

/lgtm

[zier-one]

/merge

[ti-srebot]

Your auto merge job has been accepted, waiting for:

• 831
• 833

[ti-srebot]

/run-all-tests