Change OAI license to CSSL v1.0 (and others)

- all RAN code, CI code, configuration files, dockerfiles, in CSSL v1.0
- all deployment code (openshift, charts, ancillary files like shell
  scripts), in MIT
- documentation in CC-BY-4.0
- exceptions might apply and are listed in NOTICE
- there is a new LICENSES folder with all licenses
- CONTRIBUTIONS.md has been updated accordingly

For automated changes based on OAI PL v1.1:

    perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.{c,h,cpp}
    perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.ts
    perl -i~ -0pe 's/<!--.*Licensed to the OpenAirInterface.*openairinterface.org\n.*-->/<!-- SPDX-License-Identifier: LicenseRef-CSSL-1.0 -->/s' **/*.xml

The rest (cmake, files with missing license, cmake) manually.

openair1/SIMULATION/tests/CMakeLists.txt

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LicenseRef-CSSL-1.0
+
 # This defines a cmake file with timing thresholds to include (empty by default)
 set(PHYSIM_CHECK_FILES "" CACHE STRING "CMake files ('\;' separated) with timing thresholds to include for timed physim tests")
 

openair1/SIMULATION/tests/RunTimedTest.cmake

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LicenseRef-CSSL-1.0
+
 # this script expects
 # - TEST_CMD (program + options)
 # - CHECK_SCRIPT (path to analyze-timing.sh)

openair1/SIMULATION/tests/ThresholdsCuda.cmake

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LicenseRef-CSSL-1.0
+
 # ============================================================
 # Test Suite 1: 61440 samples, short channel (l=32)
 # ============================================================

openair1/SIMULATION/tests/ThresholdsGracehopper.cmake

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LicenseRef-CSSL-1.0
+
 check_threshold_variance(physim.5g.nr_dlsim.basic.test1 "DLSCH encoding time" AVG 31 ABS_VAR 7)
 check_threshold_variance(physim.5g.nr_dlsim.basic.test2 "DLSCH encoding time" AVG 36 ABS_VAR 8)
 check_threshold_variance(physim.5g.nr_dlsim.basic.test3 "DLSCH encoding time" AVG 49 ABS_VAR 10)

openair1/SIMULATION/tests/ThresholdsOffload.cmake

@@ -1,3 +1,5 @@
+# SPDX-License-Identifier: LicenseRef-CSSL-1.0
+
 check_threshold_variance(physim.5g-offload.nr_dlsim.testCPU.1 "DLSCH encoding time" AVG 50 ABS_VAR 10)
 check_threshold_variance(physim.5g-offload.nr_dlsim.testT2.1 "DLSCH encoding time" AVG 19 ABS_VAR 4)
 check_threshold_variance(physim.5g-offload.nr_dlsim.testCPU.2 "DLSCH encoding time" AVG 65 ABS_VAR 13)

openair1/SIMULATION/tests/analyze-timing.sh

@@ -1,4 +1,5 @@
 #!/bin/bash
+# SPDX-License-Identifier: LicenseRef-CSSL-1.0
 
 # This bash script builds an awk script. The awk script tries to match
 # (provided) patterns and compares them against given thresholds condition