b0b49e1098
Summary: This diff handles the case when the CN(subject Common) is greater than 64. CN in our case is an appId, which can be greater than 64 length. Have a look at this [issue](https://fb.workplace.com/groups/flippersupport/permalink/1142641402883183/). In this issue the appID was `com.facebook.internal.focusrepresentativeapp.development.localDevelopment` See this [discussion on stack](https://unix.stackexchange.com/questions/234324/openssl-self-signed-certificate-with-a-common-name-longer-than-64-bytes) overflow to understand about the limit of 64. This diff checks the length first and then defaults the CN to be "com.flipper". Reviewed By: jknoxville Differential Revision: D28807389 fbshipit-source-id: ca01ccd5d31a51826df49f943414c42bf902be89