input: add setting event_type to match proposed struct changes

This change just adds setting the empty value for event_type on input. Inputs do not set event type.
This is related to a prosposed change in the fluent-bit library to ensure that the struct is the same format
as the proposed change to enable output plugins to set their event type.

Signed-off-by: jmccormick7 <[email protected]>

Author: jmccormick7

input/flb_plugin.h

@@ -38,6 +38,7 @@ struct flb_plugin_proxy_def {
     int flags;
     char *name;
     char *description;
+    int event_type;
 };
 
 #endif

input/input.go

@@ -52,6 +52,7 @@ func FLBPluginRegister(def unsafe.Pointer, name, desc string) int {
 	p.flags = 0
 	p.name = C.CString(name)
 	p.description = C.CString(desc)
+	p.event_type = 0
 	return 0
 }