Security update for salt (important)

This update for salt fixes the following issues:

Security issues fixed:

• CVE-2018-15750: Fixed directory traversal vulnerability in salt-api
  (bsc#1113698).
• CVE-2018-15751: Fixed remote authentication bypass in salt-api(netapi)
  that allows to execute arbitrary commands (bsc#1113699).

Non-security issues fixed:

• Improved handling of LDAP group id. gid is no longer treated as a
  string, which could have lead to faulty group creations (bsc#1113784).
• Fixed async call to process manager (bsc#1110938)
• Fixed OS arch detection when RPM is not installed (bsc#1114197)
• Crontab module fix: file attributes option missing (bsc#1114824)
• Fix git_pillar merging across multiple env repositories (bsc#1112874)

This update was imported from the SUSE:SLE-15:Update update project.