update(disk-loss):Adding lib env in disk-loss experiment (#1457)

Signed-off-by: shubhamchaudhary <[email protected]>

experiments/generic/disk_loss/chaosutil.j2

@@ -1,7 +1,9 @@
 # All code here is not indented because j2 is space sensitive
 # checks if cloud_platform is set or not
+{% if c_lib is defined and c_lib == 'litmus' %}
 {% if cloud_platform is defined and cloud_platform == 'GKE' %}
 c_util: /chaoslib/litmus/platform/gke/disk_loss.yml
 {% elif cloud_platform is defined and cloud_platform == 'AWS' %}
 c_util: /chaoslib/litmus/platform/aws/disk_loss.yml
+{% endif %}
 {% endif %}

experiments/generic/disk_loss/disk_loss_ansible_logic.yml

@@ -18,6 +18,7 @@
     c_engine: "{{ lookup('env','CHAOSENGINE') }}"
     chaos_pod_name: "{{ lookup('env','POD_NAME') }}"
     chaos_uid: "{{ lookup('env','CHAOS_UID') }}"
+    c_lib: "{{ lookup('env','LIB') }}"
     c_ns: "{{ lookup('env','CHAOS_NAMESPACE') }}"
 
   tasks:

experiments/generic/disk_loss/disk_loss_k8s_job.yml

@@ -68,6 +68,11 @@ spec:
           - name: CHAOS_NAMESPACE
             value: ''
 
+          # provide the LIB
+          # only litmus supported
+          - name: LIB
+            value: 'litmus'
+
           # provide auxiliary application details - namespace and labels of the applications
           # sample input is - "ns1:app=percona,ns2:name=nginx"
           - name: AUXILIARY_APPINFO