Description of problem:
Deploy hawkular-openshift-agent on OCP 3.5 failed, from the log can see error like  stat /opt/hawkular/hawkular-openshift-agent: no such file or directory

Version-Release number of selected component (if applicable):
openshift v3.5.0.16+a26133a
metrics-hawkular-openshift-agent   3.5.0   0896d559ade3        11 days ago

How reproducible:
always

Steps to Reproduce:
1. deploy Metrics 3.5(since there is bug using ansible, I'm using deployer) and check all pods works well

oc create -f - <<API
apiVersion: v1
kind: ServiceAccount
metadata:
  name: metrics-deployer
secrets:
- name: metrics-deployer
API

oadm policy add-role-to-user edit system:serviceaccount:openshift-infra:metrics-deployer

oc secrets new metrics-deployer nothing=/dev/null

oadm policy add-cluster-role-to-user cluster-reader system:serviceaccount:openshift-infra:heapster

oadm policy add-role-to-user view system:serviceaccount:openshift-infra:hawkular -n openshift-infra

oc new-app -f metrics.yaml --as=system:serviceaccount:openshift-infra:metrics-deployer \
-p IMAGE_PREFIX=$PREFIX \
-p IMAGE_VERSION=3.5.0 \
-p HAWKULAR_METRICS_HOSTNAME=hawkular-metrics.$SUBDOMAIN \
-p MODE=deploy \
-p USE_PERSISTENT_STORAGE=false \
-p MASTER_URL=$MASTERURL \
-p DYNAMICALLY_PROVISION_STORAGE=false \
-p CASSANDRA_NODES=1 \
-p CASSANDRA_PV_SIZE=10Gi \
-p USER_WRITE_ACCESS=false

]# oc get pod
NAME                         READY     STATUS      RESTARTS   AGE
hawkular-cassandra-1-t48j3   1/1       Running     0          14m
hawkular-metrics-34287       1/1       Running     0          14m
heapster-rpjx0               1/1       Running     0          14m
metrics-deployer-ndhb6       0/1       Completed   0          14m


2.git clone https://github.com/hawkular/hawkular-openshift-agent.git, modify 
hawkular-openshift-agent.yaml, change IMAGE_VERSION and registry

3.deploy the agent

oc create -f deploy/openshift/hawkular-openshift-agent-configmap.yaml -n openshift-infra
oc process -f deploy/openshift/hawkular-openshift-agent.yaml | oc create -n openshift-infra -f -
oc adm policy add-cluster-role-to-user hawkular-openshift-agent system:serviceaccount:openshift-infra:hawkular-openshift-agen

Actual results:
hawkular-openshift-agent never getting to Running status.
# oc get pod
NAME                             READY     STATUS             RESTARTS   AGE
hawkular-cassandra-1-t48j3       1/1       Running            0          27m
hawkular-metrics-34287           1/1       Running            0          27m
hawkular-openshift-agent-14dts   0/1       CrashLoopBackOff   7          12m
hawkular-openshift-agent-3x7t0   0/1       CrashLoopBackOff   7          12m
heapster-rpjx0                   1/1       Running            0          27m
metrics-deployer-ndhb6           0/1       Completed          0          28m


Expected results:
Agent is deployed, hence use could get application level metrics.

Additional info:
Event attached.
This blocks test for https://trello.com/c/ZQTYWrCD/154-8-support-application-level-metrics-hawkular-evg-epic-ois-met-ux