* fix(conan): conan-center used instead of bintray
* chore(doc): version updated to 21.04.1

REFS: MON-7244

* test(perl): tests fixed to match last changes in clib.
* cleanup(cmake): cleanup of CMakeLists.txt

REFS: MON-6508

* enh(logger): add a common folder, for common sources.

* enh(perl): cleanup perl connector code.

* enh(ssh): cleanup code.

* enh(ssh): switch to spdlog.

* fix(chore): fix compile on centos7

* enh(perl): switch to gtest

* fix(perl): remove some dead code.

* enh(tests): switch to googletest.

* enh(log): add spdlog support for perl_connectors.

* fix(chore): use same connectors version for both connectos.

* fix(perl): fix compile