[ISM rollover] Bug when trying to use the -i option in the ISM script

[c-bordon]

Related: https://github.com/wazuh/internal-devel-requests/issues/425

In tests carried out with the installation wizard for a distributed installation, it was detected that the -i argument does not work correctly:

root@ubuntu22:~# /usr/share/wazuh-indexer/bin/indexer-ism-init.sh -i 192.168.56.254 -p U0wf+SIuE75JtZ?9ngsVtEyvSIeI+w.o
TEMPLATES AND POLICIES - Uploading wazuh-alerts template
TEMPLATES AND POLICIES - Uploading wazuh-archives template
++ curl -s -k -u 'admin:U0wf+SIuE75JtZ?9ngsVtEyvSIeI+w.o' -X GET https://localhost:9200/_plugins/_ism/policies/rollover_policy -o /dev/null -w '%{http_code}'
+ policy_exists=000
+ [[ 000 == \4\0\4 ]]
+ [[ 000 == \2\0\0 ]]
+ echo 'TEMPLATES AND POLICIES - Error uploading rollover_policy policy'
TEMPLATES AND POLICIES - Error uploading rollover_policy policy
+ set +x
TEMPLATES AND POLICIES - Creating write indices
root@ubuntu22:~# /usr/share/wazuh-indexer/bin/indexer-ism-init.sh -p U0wf+SIuE75JtZ?9ngsVtEyvSIeI+w.o -i 192.168.56.254
TEMPLATES AND POLICIES - Uploading wazuh-alerts template
TEMPLATES AND POLICIES - Uploading wazuh-archives template
++ curl -s -k -u 'admin:U0wf+SIuE75JtZ?9ngsVtEyvSIeI+w.o' -X GET https://localhost:9200/_plugins/_ism/policies/rollover_policy -o /dev/null -w '%{http_code}'
+ policy_exists=000
+ [[ 000 == \4\0\4 ]]
+ [[ 000 == \2\0\0 ]]
+ echo 'TEMPLATES AND POLICIES - Error uploading rollover_policy policy'
TEMPLATES AND POLICIES - Error uploading rollover_policy policy
+ set +x
TEMPLATES AND POLICIES - Creating write indices

This is because the INDEXER_URL variable is not replaced when using this argument, and is left with the value of INDEXER_HOSTNAME="localhost"

wazuh-packages/stack/indexer/indexer-ism-init.sh

Line 16 in 07ff16d

INDEXER_URL="https://${INDEXER_HOSTNAME}:9200"

Tasks:

• Make a new definition of this variable within the if argument -i or leave only one variable in the case of the URL
• Verify that all script options work correctly