dashboard/app: split Reported-and-tested-by tag

Kernel community asks to split it for tooling purposes:
https://lore.kernel.org/all/[email protected]/

dashboard/app/jobs_test.go

@@ -258,7 +258,8 @@ patch:          %[3]v
 
 syzbot has tested the proposed patch and the reproducer did not trigger any issue:
 
-Reported-and-tested-by: syzbot+%[email protected]
+Reported-by: syzbot+%[email protected]
+Tested-by: syzbot+%[email protected]
 
 Tested on:
 
@@ -271,7 +272,7 @@ compiler:       compiler1
 patch:          %[2]v
 
 Note: testing is done by a robot and is best-effort only.
-`, extBugID, patchLink, kernelConfigLink, logLink))
+`, extBugID, extBugID, patchLink, kernelConfigLink, logLink))
 		c.checkURLContents(patchLink, []byte(sampleGitPatch))
 		c.checkURLContents(kernelConfigLink, build.KernelConfig)
 	}
@@ -372,7 +373,8 @@ func TestJobWithoutPatch(t *testing.T) {
 
 syzbot has tested the proposed patch and the reproducer did not trigger any issue:
 
-Reported-and-tested-by: syzbot+%[email protected]
+Reported-by: syzbot+%[email protected]
+Tested-by: syzbot+%[email protected]
 
 Tested on:
 
@@ -384,7 +386,7 @@ compiler:       compiler2
 
 Note: no patches were applied.
 Note: testing is done by a robot and is best-effort only.
-`, extBugID, kernelConfigLink))
+`, extBugID, extBugID, kernelConfigLink))
 		c.checkURLContents(kernelConfigLink, testBuild.KernelConfig)
 	}
 

dashboard/app/templates/mail_test_result.txt

@@ -15,7 +15,12 @@ Error text is too large and was truncated, full error text is at:
 {{else}}
 syzbot has tested the proposed patch and the reproducer did not trigger any issue:
 
-Reported-and-tested-by: {{.CreditEmail}}
+{{/* Note: kernel prefers separate reported/tested tags rather than a single
+Reported-and-tested-by, see:
+https://lore.kernel.org/all/[email protected]/
+*/ -}}
+Reported-by: {{.CreditEmail}}
+Tested-by: {{.CreditEmail}}
 {{end}}
 Tested on: