Add is_unknown flag to data files of unknown licenses

Signed-off-by: akugarg <[email protected]>

Author: akugarg

src/licensedcode/data/licenses/free-unknown.yml

@@ -3,4 +3,6 @@ short_name: Free unknown
 name: Free unknown license detected but not recognized
 category: Unstated License
 owner: Unspecified
+is_unknown: yes
 spdx_license_key: LicenseRef-scancode-free-unknown
+

src/licensedcode/data/licenses/license-file-reference.yml

@@ -4,4 +4,5 @@ short_name: license-file-reference
 name: license-file-reference
 category: Unstated License
 owner: Unspecified
+is_unknown: yes
 notes: this was known before as "see-license" and is now unknown-license-reference

src/licensedcode/data/licenses/see-license.yml

@@ -4,4 +4,5 @@ name: See License mention
 category: Unstated License
 owner: Unspecified
 is_deprecated: yes
+is_unknown: yes
 notes: replaced by unknown-license-reference

src/licensedcode/data/licenses/unknown-license-reference.yml

@@ -3,6 +3,7 @@ short_name: Unknown License reference
 name: Unknown License file reference
 category: Unstated License
 owner: Unspecified
+is_unknown: yes
 notes: This is reference to a license file with no clear license. this was known before as "see-license"
     and "license-file-reference"
 spdx_license_key: LicenseRef-scancode-unknown-license-reference

src/licensedcode/data/licenses/unknown-spdx.yml

@@ -3,6 +3,7 @@ short_name: unknown SPDX
 name: Unknown SPDX license detected but not recognized
 category: Unstated License
 owner: Unspecified
+is_unknown: yes
 spdx_license_key: LicenseRef-scancode-unknown-spdx
 notes: This is something that clearly ressembles a license in an SPDX license
  expression but is not conclusively an SPDX license ID.

src/licensedcode/data/licenses/unknown.yml

@@ -3,5 +3,6 @@ short_name: unknown
 name: Unknown license detected but not recognized
 category: Unstated License
 owner: Unspecified
+is_unknown: yes
 spdx_license_key: LicenseRef-scancode-unknown
 notes: This is something that clearly ressembles a license but is not conclusive.