build: require bazel 0.8 (#20897)
build: require bazel 0.8 (#20897)

Users should get an error if they are running an older version of Bazel than we have on CI.
PR Close #20897

jasonaden/angular,mgol/angular,mhevery/angular,rkirov/angular,sarunint/angular,wKoza/angular,ValtoFrameworks/Angular-2,juristr/angular,manekinekko/angular,trshafer/angular,gdi2290/angular,mprobst/angular,mzgol/angular,angular-indonesia/angular,brandonroberts/angular,snaptech/angular,kegluneq/angular,heathkit/angular,IdeaBlade/angular,ocombe/angular,NathanWalker/angular,ValtoFrameworks/Angular-2,sarunint/angular,Toxicable/angular,robwormald/angular,chuckjaz/angular,matsko/angular,alxhub/angular,jonrimmer/angular,snaptech/angular,snaptech/angular,mhevery/angular,mzgol/angular,ultrasonicsoft/angular,vsavkin/angular,kegluneq/angular,gkalpak/angular,mzgol/angular,petebacondarwin/angular,blesh/angular,Brocco/angular,JiaLiPassion/angular,alexeagle/angular,alxhub/angular,brandonroberts/angular,brandonroberts/angular,kara/angular,ghetolay/angular,aboveyou00/angular,mgol/angular,mgechev/angular,chuckjaz/angular,alxhub/angular,Brocco/angular,mlaval/angular,alexeagle/angular,Toxicable/angular,ultrasonicsoft/angular,Toxicable/angular,brandonroberts/angular,angular-indonesia/angular,Brocco/angular,StephenFluin/angular,vikerman/angular,alexeagle/angular,jonrimmer/angular,mhevery/angular,angular/angular,vsavkin/angular,wKoza/angular,heathkit/angular,jasonaden/angular,gdi2290/angular,Toxicable/angular,StephenFluin/angular,blesh/angular,ocombe/angular,juristr/angular,mgol/angular,mgol/angular,mhevery/angular,filipesilva/angular,IgorMinar/angular,kara/angular,chuckjaz/angular,kara/angular,alxhub/angular,ocombe/angular,IdeaBlade/angular,trshafer/angular,robwormald/angular,angular/angular,ghetolay/angular,manekinekko/angular,hansl/angular,matsko/angular,ocombe/angular,mgol/angular,filipesilva/angular,vsavkin/angular,gdi2290/angular,heathkit/angular,manekinekko/angular,mgechev/angular,chuckjaz/angular,shairez/angular,angular-indonesia/angular,gdi2290/angular,IgorMinar/angular,gdi2290/angular,Toxicable/angular,juristr/angular,heathkit/angular,shairez/angular,mgol/angular,gdi2290/angular,StephenFluin/angular,jonrimmer/angular,NathanWalker/angular,alexeagle/angular,trshafer/angular,kara/angular,IdeaBlade/angular,rkirov/angular,heathkit/angular,dsebastien/angular,alexeagle/angular,mprobst/angular,vikerman/angular,snaptech/angular,vsavkin/angular,NathanWalker/angular,sarunint/angular,dsebastien/angular,gkalpak/angular,alexeagle/angular,hansl/angular,ocombe/angular,robwormald/angular,JiaLiPassion/angular,mgechev/angular,angular/angular,cironunes/angular,aboveyou00/angular,chuckjaz/angular,vicb/angular,Brocco/angular,ultrasonicsoft/angular,wKoza/angular,cironunes/angular,aboveyou00/angular,juristr/angular,blesh/angular,cironunes/angular,mlaval/angular,sarunint/angular,vicb/angular,shairez/angular,hansl/angular,JiaLiPassion/angular,NathanWalker/angular,LucasSloan/angular,trshafer/angular,Brocco/angular,angular-indonesia/angular,mlaval/angular,StephenFluin/angular,trshafer/angular,jasonaden/angular,aboveyou00/angular,dsebastien/angular,NathanWalker/angular,vikerman/angular,kara/angular,ultrasonicsoft/angular,rkirov/angular,mprobst/angular,IgorMinar/angular,jasonaden/angular,Brocco/angular,petebacondarwin/angular,ValtoFrameworks/Angular-2,snaptech/angular,mprobst/angular,vicb/angular,LucasSloan/angular,vsavkin/angular,mgechev/angular,petebacondarwin/angular,ValtoFrameworks/Angular-2,shairez/angular,manekinekko/angular,vicb/angular,sarunint/angular,LucasSloan/angular,StephenFluin/angular,aboveyou00/angular,hansl/angular,cironunes/angular,vikerman/angular,brandonroberts/angular,aboveyou00/angular,kegluneq/angular,mzgol/angular,kara/angular,ultrasonicsoft/angular,ghetolay/angular,IgorMinar/angular,rkirov/angular,jasonaden/angular,mlaval/angular,vicb/angular,mhevery/angular,filipesilva/angular,gnomeontherun/angular,ValtoFrameworks/Angular-2,rkirov/angular,trshafer/angular,NathanWalker/angular,snaptech/angular,vicb/angular,mprobst/angular,wKoza/angular,gnomeontherun/angular,hansl/angular,LucasSloan/angular,vikerman/angular,kegluneq/angular,mgiambalvo/angular,hansl/angular,robwormald/angular,filipesilva/angular,petebacondarwin/angular,heathkit/angular,gkalpak/angular,rkirov/angular,matsko/angular,ultrasonicsoft/angular,blesh/angular,IdeaBlade/angular,manekinekko/angular,filipesilva/angular,IdeaBlade/angular,JiaLiPassion/angular,ghetolay/angular,IgorMinar/angular,mlaval/angular,mhevery/angular,jonrimmer/angular,IgorMinar/angular,robwormald/angular,mprobst/angular,jonrimmer/angular,mgiambalvo/angular,gnomeontherun/angular,ocombe/angular,mzgol/angular,dsebastien/angular,sarunint/angular,vikerman/angular,brandonroberts/angular,angular/angular,petebacondarwin/angular,mzgol/angular,ghetolay/angular,LucasSloan/angular,cironunes/angular,manekinekko/angular,jasonaden/angular,Toxicable/angular,robwormald/angular,mgiambalvo/angular,gnomeontherun/angular,alxhub/angular,wKoza/angular,juristr/angular,wKoza/angular,dsebastien/angular,blesh/angular,petebacondarwin/angular,cironunes/angular,dsebastien/angular,chuckjaz/angular,matsko/angular,mgiambalvo/angular,L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