grpc: move from meta-networking to meta-oe

* because sysdig from meta-oe depends on it now, since:
  commit ed798c7643
  Author: Khem Raj <raj.khem@gmail.com>
  Date:   Wed Jan 2 17:59:20 2019 -0800

    sysdig: Upgrade to 0.26.5

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-networking/recipes-core/packagegroups/packagegroup-meta-networking.bb

@@ -55,7 +55,7 @@ RDEPENDS_packagegroup-meta-networking-daemons = "\
 RDEPENDS_packagegroup-meta-networking-daemons_remove_libc-musl = "opensaf"
 
 RDEPENDS_packagegroup-meta-networking-devtools = "\
-    python3-ldap grpc \
+    python3-ldap \
     "
 
 RDEPENDS_packagegroup-meta-networking-extended = "\

meta-oe/recipes-core/packagegroups/packagegroup-meta-oe.bb

@@ -110,7 +110,7 @@ RDEPENDS_packagegroup-meta-oe-devtools ="\
     android-tools android-tools-conf bootchart breakpad \
     capnproto cgdb cscope ctags \
     debootstrap dmalloc flatbuffers \
-    giflib icon-slicer iptraf-ng jq jsoncpp jsonrpc json-spirit \
+    giflib grpc icon-slicer iptraf-ng jq jsoncpp jsonrpc json-spirit \
     kconfig-frontends lemon libedit libgee libsombok3 \
     libubox log4cplus lshw ltrace lua mcpp memstat mercurial \
     mpich msgpack-c nlohmann-json openocd pax-utils \