Change debug level

src/common/checkpoint.c

src/common/cpu_frequency.c

src/common/slurm_cred.c

...plugins/acct_gather_energy/none/acct_gather_energy_none.c

...plugins/acct_gather_energy/rapl/acct_gather_energy_rapl.c

..._gather_filesystem/lustre/acct_gather_filesystem_lustre.c

...acct_gather_filesystem/none/acct_gather_filesystem_none.c

...acct_gather_infiniband/none/acct_gather_infiniband_none.c

...acct_gather_infiniband/ofed/acct_gather_infiniband_ofed.c

...ugins/acct_gather_profile/hdf5/acct_gather_profile_hdf5.c

...ugins/acct_gather_profile/none/acct_gather_profile_none.c

src/plugins/auth/authd/auth_authd.c

src/plugins/auth/munge/auth_munge.c

src/plugins/auth/none/auth_none.c

src/plugins/jobacct_gather/aix/jobacct_gather_aix.c

src/plugins/jobacct_gather/cgroup/jobacct_gather_cgroup.c

src/plugins/jobacct_gather/linux/jobacct_gather_linux.c

src/plugins/jobacct_gather/none/jobacct_gather_none.c

src/plugins/switch/cray/switch_cray.c

src/plugins/switch/generic/switch_generic.c