net: apps: Modify echo-client to send data only after reception
net: apps: Modify echo-client to send data only after reception

Modify echo-client to send packet after packet received from
server and wait unlimited ticks. Current behaviour flood messages
to server irrespective of reception at server end. Modified
behavior only for nanokernel at the moment.

Change-Id: I6aa20c5b9fc9d6d1cf8f996e90735f5d2b986e5a
Signed-off-by: Ravi kumar Veeramally <406c082aeb452858c41b213a757768e1c1dff29e@linux.intel.com>

coldnew/zephyr-project-fork,Vudentz/zephyr,GiulianoFranchetto/zephyr,jamesonwilliams/zephyr-kernel,32bitmicro/zephyr,aceofall/zephyr-iotos,zephyriot/zephyr,aceofall/zephyr-iotos,GiulianoFranchetto/zephyr,Vudentz/zephyr,ldts/zephyr,fractalclone/zephyr-riscv,erwango/zephyr,Vudentz/zephyr,Vudentz/zephyr,runchip/zephyr-cc3220,rsalveti/zephyr,bboozzoo/zephyr,ldts/zephyr,aceofall/zephyr-iotos,explora26/zephyr,rsalveti/zephyr,runchip/zephyr-cc3200,holtmann/zephyr,nashif/zephyr,kraj/zephyr,ldts/zephyr,holtmann/zephyr,galak/zephyr,runchip/zephyr-cc3200,jamesonwilliams/zephyr-kernel,nashif/zephyr,fbsder/zephyr,erwango/zephyr,holtmann/zephyr,finikorg/zephyr,runchip/zephyr-cc3200,punitvara/zephyr,zephyrproject-rtos/zephyr,sharronliu/zephyr,rsalveti/zephyr,mirzak/zephyr-os,bboozzoo/zephyr,punitvara/zephyr,sharronliu/zephyr,pklazy/zephyr,runchip/zephyr-cc3220,mirzak/zephyr-os,GiulianoFranchetto/zephyr,runchip/zephyr-cc3220,Vudentz/zephyr,sharronliu/zephyr,coldnew/zephyr-project-fork,tidyjiang8/zephyr-doc,mbolivar/zephyr,jamesonwilliams/zephyr-kernel,bigdinotech/zephyr,GiulianoFranchetto/zephyr,coldnew/zephyr-project-fork,mbolivar/zephyr,holtmann/zephyr,kraj/zephyr,zephyrproject-rtos/zephyr,fbsder/zephyr,32bitmicro/zephyr,coldnew/zephyr-project-fork,32bitmicro/zephyr,runchip/zephyr-cc3220,fbsder/zephyr,bboozzoo/zephyr,bboozzoo/zephyr,jamesonwilliams/zephyr-kernel,nashif/zephyr,sharronliu/zephyr,bigdinotech/zephyr,tidyjiang8/zephyr-doc,zephyriot/zephyr,punitvara/zephyr,32bitmicro/zephyr,zephyriot/zephyr,kraj/zephyr,erwango/zephyr,bboozzoo/zephyr,pklazy/zephyr,galak/zephyr,erwango/zephyr,tidyjiang8/zephyr-doc,kraj/zephyr,mbolivar/zephyr,zephyrproject-rtos/zephyr,zephyriot/zephyr,fractalclone/zephyr-riscv,aceofall/zephyr-iotos,mirzak/zephyr-os,pklazy/zephyr,nashif/zephyr,pklazy/zephyr,galak/zephyr,fractalclone/zephyr-riscv,galak/zephyr,runchip/zephyr-cc3220,mirzak/zephyr-os,bigdinotech/zephyr,mbolivar/zephyr,rsalveti/zephyr,tidyjiang8/zephyr-doc,coldnew/zephyr-project-fork,bigdinotech/zephyr,erwango/zephyr,runchip/zephyr-cc3200,fractalclone/zephyr-riscv,Vudentz/zephyr,ldts/zephyr,zephyrproject-rtos/zephyr,tidyjiang8/zephyr-doc,aceofall/zephyr-iotos,explora26/zephyr,explora26/zephyr,ldts/zephyr,GiulianoFranchetto/zephyr,zephyriot/zephyr,mbolivar/zephyr,finikorg/zephyr,nashif/zephyr,rsalveti/zephyr,finikorg/zephyr,explora26/zephyr,runchip/zephyr-cc3200,explora26/zephyr,kraj/zephyr,bigdinotech/zephyr,jamesonwilliams/zephyr-kernel,sharronliu/zephyr,fbsder/zephyr,punitvara/zephyr,galak/zephyr,punitvara/zephyr,finikorg/zephyr,fbsder/zephyr,pklazy/zephyr,finikorg/zephyr,mirzak/zephyr-os,32bitmicro/zephyr,zephyrproject-rtos/zephyr,holtmann/zephyr,fractalclone/zephyr-riscv