CtsNetHttpTestCases were missing a DevSdkIgnoreRule after updating the min_sdk version to R+ (which made it installable on R where the cronet classes are not in the bootclasspath.) Test: atest CtsNetHttpTestCases Bug: 259632936 (cherry picked from https://android-review.googlesource.com/q/commit:92c4636c5cda994f0ad9508e3cd5e26ea727079f) Merged-In: I706ff92376227c1759fd6e542066fcff3a7cf052 Change-Id: I706ff92376227c1759fd6e542066fcff3a7cf052