Update license references

Update license references

Patch set 2: Additional licensing.
Patch set 3: ics, ric, kubeproxy additional licensing.
Patch set 4: dmaapadp, keycloak, sdnc additional licensing.
Patch set 5: a1pms, dmaapmed, prodstub additional licensing.
Patch set 6: control_panel, httpproxy, rapp_catalogue additional licensing.
Patch set 7: dmaapmr, istio, mrstub additional licensing.
Patch set 8: kafka_procon, cr, prodstub additional licensing.
Patch set 9: test mrsub, test cr, readthedocs additional licensing.
Patch set 10: the last part for additional licensing.

Issue-ID: NONRTRIC-779
Change-Id: Iede14c3ecd4589f3f11e621ff0c442a42b429c14
Signed-off-by: halil.cakal <halil.cakal@est.tech>