Allow exclude_arch and exclude_os_type in qa-suite yamls
Allow exclude_arch and exclude_os_type in qa-suite yamls

Adding the option:

exclude_arch:

or

exclude_os_type:

in the ceph-qa-suite yaml allows tests to be skipped for certain
types of hardware or distros.

Example:

exclude_arch: armv7l

This will make said test not run on arm machines.

exclude_os_type: rhel

Would make multi-distro tests skip a specific test on RHEL.

SUSE/teuthology,ceph/teuthology,tchaikov/teuthology,ktdreyer/teuthology,t-miyamae/teuthology,ceph/teuthology,caibo2014/teuthology,SUSE/teuthology,michaelsevilla/teuthology,zhouyuan/teuthology,ivotron/teuthology,dreamhost/teuthology,dmick/teuthology,ivotron/teuthology,ktdreyer/teuthology,michaelsevilla/teuthology,yghannam/teuthology,caibo2014/teuthology,robbat2/teuthology,SUSE/teuthology,dmick/teuthology,yghannam/teuthology,dmick/teuthology,tchaikov/teuthology,dreamhost/teuthology,t-miyamae/teuthology,zhouyuan/teuthology,robbat2/teuthology