resource-agents should depend on psmisc (and probably others) for the resources to work

[Rafael David Tinoco]

When configuring a Filesystem OCF resource with the following setup:

(k)rafaeldtinoco@clubionic01:~$ crm conf show
node 1: clubionic01
node 2: clubionic02
node 3: clubionic03
primitive ext4 Filesystem \
        params device="/dev/clustervg/clustervol" directory="/clusterdata" fstype=ext4
primitive fence_clubionic stonith:fence_scsi \
        params pcmk_host_list="clubionic01 clubionic02 clubionic03" plug="" devices="/dev/sda" \
        meta provides=unfencing target-role=Started
primitive lvm2 LVM-activate \
        params vgname=clustervg vg_access_mode=system_id
primitive virtual_ip IPaddr2 \
        params ip=10.250.98.13 nic=eth3 \
        op monitor interval=10s
primitive webserver systemd:lighttpd \
        op monitor interval=10 timeout=30
group webservergroup lvm2 ext4 virtual_ip webserver \
        meta target-role=Started
property cib-bootstrap-options: \
        have-watchdog=false \
        dc-version=1.1.18-2b07d5c5a9 \
        cluster-infrastructure=corosync \
        cluster-name=clubionic \
        stonith-enabled=on \
        stonith-action=off \
        no-quorum-policy=stop \
        last-lrm-refresh=1583529396

being clubionic01,02,03 all nodes configured with Ubuntu Cloud Images, I got the following error when trying to enable "ext4" resource:

* ext4_monitor_0 on clubionic02 'not installed' (5): call=161, status=complete, exitreason='Setup problem: couldn't find command: fuser', last-rc-change='Fri Mar 6 21:14:36 2020', queued=0ms, exec=44ms

Because the nodes were missing "psmisc" package.