RPM post remove script update for proper handle on all Linux distributions (#1381)

CHANGELOG.md

@@ -13,6 +13,7 @@
 - [#1481](https://github.com/influxdata/telegraf/issues/1481): jolokia: fix handling multiple multi-dimensional attributes.
 - [#1430](https://github.com/influxdata/telegraf/issues/1430): Fix prometheus character sanitizing. Sanitize more win_perf_counters characters.
 - [#1534](https://github.com/influxdata/telegraf/pull/1534): Add diskio io_time to FreeBSD & report timing metrics as ms (as linux does).
+- [#1379](https://github.com/influxdata/telegraf/issues/1379): Fix covering Amazon Linux for post remove flow.
 
 ## v1.0 beta 3 [2016-07-18]
 

scripts/post-remove.sh

@@ -15,10 +15,9 @@ function disable_chkconfig {
     rm -f /etc/init.d/telegraf
 }
 
-if [[ -f /etc/redhat-release ]]; then
-    # RHEL-variant logic
-    if [[ "$1" = "0" ]]; then
-	# InfluxDB is no longer installed, remove from init system
+if [[ "$1" == "0" ]]; then
+    # RHEL and any distribution that follow RHEL, Amazon Linux covered
+    # telegraf is no longer installed, remove from init system
     rm -f /etc/default/telegraf
 
     which systemctl &>/dev/null
@@ -28,10 +27,8 @@ if [[ -f /etc/redhat-release ]]; then
         # Assuming sysv
         disable_chkconfig
     fi
-    fi
-elif [[ -f /etc/debian_version ]]; then
+elif [ "$1" == "remove" -o "$1" == "purge" ]; then
     # Debian/Ubuntu logic
-    if [[ "$1" != "upgrade" ]]; then
     # Remove/purge
     rm -f /etc/default/telegraf
 
@@ -43,4 +40,3 @@ elif [[ -f /etc/debian_version ]]; then
         disable_update_rcd
     fi
 fi
-fi