{melodic} webrtc: Fix dependency on glib-2.0 and blacklist

* fixes:
ERROR: Nothing PROVIDES 'libglib-2.0' (but /jenkins/mjansa/build-ros/ros1-melodic-thud/meta-ros/meta-ros1-melodic/generated-recipes/webrtc-ros/webrtc_59.0.3.bb
DEPENDS on or otherwise requires it). Close matches:
  glib-2.0
NOTE: Runtime target 'webrtc' is unbuildable, removing...
Missing or unbuildable dependency chain was: ['webrtc', 'libglib-2.0']

Signed-off-by: Martin Jansa <martin.jansa@lge.com>

meta-ros1-melodic/conf/ros-distro/include/melodic/ros-distro.inc

@@ -309,6 +309,10 @@ ROS_UNRESOLVED_PLATFORM_PKG_vlc = "vlc"
 # Just a package built by geographiclib
 ROS_UNRESOLVED_PLATFORM_PKG_geographiclib-tools = "geographiclib-tools"
 
+# Used by:
+# generated-recipes/webrtc-ros/webrtc_59.0.3.bb
+ROS_UNRESOLVED_PLATFORM_PKG_libglib-dev = "glib-2.0"
+
 #ROS_UNRESOLVED_PLATFORM_PKG_arduino-core = "arduino-core"
 ROS_UNRESOLVED_PLATFORM_PKG_bluez = "bluez5"
 ROS_UNRESOLVED_PLATFORM_PKG_clang-tidy = "clang-tidy"
@@ -326,7 +330,6 @@ ROS_UNRESOLVED_PLATFORM_PKG_libftdi-dev = "libftdi"
 # with cpp-wrapper PACKAGECONFIG enabled
 ROS_UNRESOLVED_PLATFORM_PKG_libftdipp-dev = "libftdi"
 #ROS_UNRESOLVED_PLATFORM_PKG_libgeos++-dev = "libgeos++-dev"
-ROS_UNRESOLVED_PLATFORM_PKG_libglib-dev = "libglib-2.0"
 ROS_UNRESOLVED_PLATFORM_PKG_libgphoto-dev = "libgphoto2"
 ROS_UNRESOLVED_PLATFORM_PKG_libgps = "gpsd"
 #ROS_UNRESOLVED_PLATFORM_PKG_libgts = "libgts"

meta-ros1-melodic/recipes-bbappends/webrtc-ros/webrtc_%.bbappend

@@ -0,0 +1,12 @@
+# Copyright (c) 2020 LG Electronics, Inc.
+
+# Fetches depot_tools during do_configure and then tries to use vpython which isn't in dependencies
+#
+# | -- Fetching depot_tools from Chromium
+# | Cloning into 'depot_tools'...
+# | -- Fetching Ninja build tool
+# | -- Fetching WebRTC source code
+# | /jenkins/mjansa/build-ros/ros1-melodic-thud/tmp-glibc/work/aarch64-oe-linux/webrtc/59.0.3-r0/git/build/depot_tools/vpython: line 42: /jenkins/mjansa/build-ros/ros1-melodic-thud/tmp-glibc/work/aarch64-oe-linux/webrtc/59.0.3-r0/git/build/depot_tools/.cipd_bin/vpython: No such file or directory
+# | CMake Error at CMakeLists.txt:41 (message):
+# |   cannot fetch WebRTC source code
+PNBLACKLIST[webrtc] ?= "Fetches depot_tools during do_configure and then tries to use vpython which isn't in dependencies"

meta-ros1-melodic/recipes-core/packagegroups/packagegroup-ros-world-melodic.bb

@@ -36,6 +36,9 @@ RDEPENDS_${PN}_remove = "rosdoc-lite"
 RDEPENDS_${PN}_remove = "jackal-tutorials"
 RDEPENDS_${PN}_remove = "odom-frame-publisher"
 
+# Fetches depot_tools during do_configure and then tries to use vpython which isn't in dependencies
+RDEPENDS_${PN}_remove = "webrtc"
+
 RDEPENDS_${PN}_remove = "${@bb.utils.contains('ROS_WORLD_SKIP_GROUPS', 'qt5', '${ROS_SUPERFLORE_GENERATED_WORLD_PACKAGES_DEPENDING_ON_META_QT5}', '', d)}"
 
 ROS_SUPERFLORE_GENERATED_WORLD_PACKAGES_DEPENDING_ON_META_QT5 = " \