Added re-try when removing job
Added re-try when removing job

Becuase Jenkins sometimes breaks for
unknown reason while removing jobs

imsardine/jenkinsapi,jduan/jenkinsapi,mistermocha/jenkinsapi,salimfadhley/jenkinsapi,mistermocha/jenkinsapi,JohnLZeller/jenkinsapi,zaro0508/jenkinsapi,jduan/jenkinsapi,aerickson/jenkinsapi,JohnLZeller/jenkinsapi,zaro0508/jenkinsapi,mistermocha/jenkinsapi,JohnLZeller/jenkinsapi,zaro0508/jenkinsapi,salimfadhley/jenkinsapi,aerickson/jenkinsapi,domenkozar/jenkinsapi,domenkozar/jenkinsapi,imsardine/jenkinsapi,imsardine/jenkinsapi