fixes default in ansible

piacere_monitoring/vars/main.yaml

-pma_deployment_id: "{{ lookup('env', 'DEPLOYMENT_ID' ) | '123e4567-e89b-12d3-a456-426614174002' }}" 
-pma_influxdb_bucket:  "{{ lookup('env', 'INFLUXDB_BUCKET' ) | 'bucket' }}"
-pma_influxdb_token:  "{{ lookup('env', 'INFLUXDB_TOKEN' ) | 'piacerePassword' }}"
-pma_influxdb_org:  "{{ lookup('env', 'INFLUXDB_ORG' ) | 'piacere' }}"
-pma_influxdb_addr:  "{{ lookup('env', 'INFLUXDB_ADDR' ) | 'https://influxdb.pm.ci.piacere.digital.tecnalia.dev' }}"
+pma_deployment_id: "{{ lookup('env', 'DEPLOYMENT_ID' ) | default('123e4567-e89b-12d3-a456-426614174002') }}" 
+pma_influxdb_bucket:  "{{ lookup('env', 'INFLUXDB_BUCKET' ) | default('bucket') }}"
+pma_influxdb_token:  "{{ lookup('env', 'INFLUXDB_TOKEN' ) | default('piacerePassword') }}"
+pma_influxdb_org:  "{{ lookup('env', 'INFLUXDB_ORG' ) | default('piacere') }}"
+pma_influxdb_addr:  "{{ lookup('env', 'INFLUXDB_ADDR' ) | default('https://influxdb.pm.ci.piacere.digital.tecnalia.dev') }}"
 
 telegraf_agent_package_state: latest