UI is trimming the newline characters in the private key before sending to backend. The private key becomes invalid without the newline chars.

https://github.com/ManageIQ/manageiq/pull/15109

New commit detected on ManageIQ/manageiq/master:
https://github.com/ManageIQ/manageiq/commit/f7f5b4234d4629b7cb0f5fd85fdbb001ddc8d955

commit f7f5b4234d4629b7cb0f5fd85fdbb001ddc8d955
Author:     James Wong <jwong>
AuthorDate: Tue May 16 12:24:23 2017 -0400
Commit:     James Wong <jwong>
CommitDate: Tue May 16 12:29:08 2017 -0400

    scm_credential private_key field to have multiple line
    
    https://bugzilla.redhat.com/show_bug.cgi?id=1451326

 .../ansible_tower/shared/automation_manager/scm_credential.rb    | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)