examples: fix build with meson

The ip_pipeline and qos_meter example apps now use experimental APIs so
this fact needs to be flagged in their meson.build files.

Fixes: c06ddf9698 ("meter: add configuration profile")

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>

examples/ip_pipeline/meson.build

@@ -7,6 +7,7 @@
 # DPDK instance, use 'make'
 
 deps += ['cfgfile', 'pipeline', 'bus_pci']
+allow_experimental_apis = true
 includes += include_directories('pipeline')
 sources = files(
 	'config_check.c',

examples/qos_meter/meson.build

@@ -7,6 +7,7 @@
 # DPDK instance, use 'make'
 
 deps += 'meter'
+allow_experimental_apis = true
 sources = files(
 	'main.c', 'rte_policer.c'
 )