debug_utilities: Install ast_logescalator to /var/lib/asterisk/scripts

Forgot to install it with the original patch

Change-Id: I8bdb540a6694971ae5fe21f48d532332c6482e4c

contrib/Makefile

@@ -21,11 +21,13 @@ include $(ASTTOPDIR)/Makefile.rules
 
 install:
 	$(INSTALL) -d "$(DESTDIR)$(ASTDATADIR)/scripts"
+	$(INSTALL) -m 755 scripts/ast_logescalator "$(DESTDIR)$(ASTDATADIR)/scripts/ast_logescalator"
 	$(INSTALL) -m 755 scripts/ast_loggrabber "$(DESTDIR)$(ASTDATADIR)/scripts/ast_loggrabber"
 	$(INSTALL) -m 755 scripts/ast_coredumper "$(DESTDIR)$(ASTDATADIR)/scripts/ast_coredumper"
 	$(INSTALL) -m 755 scripts/refcounter.py "$(DESTDIR)$(ASTDATADIR)/scripts/refcounter.py"
 
 uninstall:
+	-rm -f "$(DESTDIR)$(ASTDATADIR)/scripts/ast_logescalator"
 	-rm -f "$(DESTDIR)$(ASTDATADIR)/scripts/ast_loggrabber"
 	-rm -f "$(DESTDIR)$(ASTDATADIR)/scripts/ast_coredumper"
 	-rm -f "$(DESTDIR)$(ASTDATADIR)/scripts/refcounter.py"