Add false positive license rules

Signed-off-by: Ayan Sinha Mahapatra <[email protected]>

Author: AyanSinhaMahapatra

src/licensedcode/data/rules/false-positive_687.RULE

@@ -0,0 +1,7 @@
+---
+is_false_positive: yes
+notes: seen in repo1.maven.org/maven2/com/google/javascript/closure-compiler/v20180204
+---
+
+PRESERVE, // same as license
+  PRIVATE,

src/licensedcode/data/rules/false-positive_688.RULE

@@ -0,0 +1,6 @@
+---
+is_false_positive: yes
+notes: seen in repo1.maven.org/maven2/com/google/javascript/closure-compiler/v20180204
+---
+
+// So once a child scope is created, this flow scope may not be modified.

src/licensedcode/data/rules/false-positive_689.RULE

@@ -0,0 +1,6 @@
+---
+is_false_positive: yes
+notes: seen in repo1.maven.org/maven2/com/google/javascript/closure-compiler/v20180204
+---
+
+other.license = license;