pid1: don't reset setting from /proc/cmdline upon restart
    
    We have settings which may be set on the kernel command line, and also
    in /proc/cmdline (for pid1). The settings in /proc/cmdline have higher priority
    of course. When a reload was done, we'd reload just the configuration file,
    losing the overrides.
    
    So read /proc/cmdline again during reload.
    
    Also, when initially reading the configuration file when program starts,
    don't treat any errors as fatal. The configuration done in there doesn't
    seem important enough to refuse boot.
    
    (cherry picked from commit 470a5e6dcec4637439ae953002127af214d396ac)
    
    Related: #1734787
    
    patch_name: 0277-pid1-don-t-reset-setting-from-proc-cmdline-upon-rest.patch
    present_in_specfile: true
    location_in_specfile: 277
    squash_commits: true