For GP 6 beta, the release engineering team is removing the apr-util
package from the list of bundled dependencies. Users will be asked
to provide their own apr-util package, which can differ in the version
on each platform. So it is necessary to verify gpperfmon is workable
with the platform provided apr-util on each supported platform.

Originally, gpperfmon test is done in CLI test suite, only covers centos6.
This commit changed it to a dedicated suite in order to test multiple
platforms.
Note: on SLES12 does not need to install libapr-util1 to run gpmmon