Set /etc/hosts entries to lowercase

Change-Id: Iead0d2f85cbc6756de21a9e48f519377abe91df0
Related-Prod: PROD-30027
(cherry picked from commit b17982b09e7c6ff1ae511fa279b867581460b514)
diff --git a/linux/files/hosts b/linux/files/hosts
index 17ee079..c1a7c19 100644
--- a/linux/files/hosts
+++ b/linux/files/hosts
@@ -45,5 +45,5 @@
 {%- else %}
 {%- set sorted_entries = entries -%}
 {%- endif %}
-{{ address }}   {{ sorted_entries|join(' ') }}
+{{ address }}   {{ sorted_entries|join(' ')|lower }}
 {%- endfor %}