Add allowMissingSdk() in tests because `ANDROID_HOME` is undefined when running presubmits.

Test: Unit tests pass.
Change-Id: Ife9311c8a8854e82528aea21c02064f3d97103c3

diff --git a/work/workmanager-lint/src/test/java/androidx/work/lint/BadConfigurationProviderTest.kt b/work/workmanager-lint/src/test/java/androidx/work/lint/BadConfigurationProviderTest.kt
index 2a1f43a..ba4af62 100644
--- a/work/workmanager-lint/src/test/java/androidx/work/lint/BadConfigurationProviderTest.kt
+++ b/work/workmanager-lint/src/test/java/androidx/work/lint/BadConfigurationProviderTest.kt

@@ -45,6 +45,7 @@
             WORK_MANAGER_CONFIGURATION_PROVIDER,
             customApplication
         )
+            .allowMissingSdk()
             .issues(BadConfigurationProviderIssueDetector.ISSUE)
             .run()
             .expectClean()
@@ -87,6 +88,7 @@
             customApplication,
             invalidProvider
         )
+            .allowMissingSdk()
             .issues(BadConfigurationProviderIssueDetector.ISSUE)
             .run()
             .expect("""
@@ -121,6 +123,7 @@
             WORK_MANAGER_CONFIGURATION_PROVIDER,
             customApplication
         )
+            .allowMissingSdk()
             .issues(BadConfigurationProviderIssueDetector.ISSUE)
             .run()
             .expectClean()

diff --git a/work/workmanager-lint/src/test/java/androidx/work/lint/PeriodicEnqueueIssueDetectorTest.kt b/work/workmanager-lint/src/test/java/androidx/work/lint/PeriodicEnqueueIssueDetectorTest.kt
index 28e1cf4..ab0dd04 100644
--- a/work/workmanager-lint/src/test/java/androidx/work/lint/PeriodicEnqueueIssueDetectorTest.kt
+++ b/work/workmanager-lint/src/test/java/androidx/work/lint/PeriodicEnqueueIssueDetectorTest.kt

@@ -54,6 +54,7 @@
             PERIODIC_WORK_REQUEST,
             snippet
         )
+            .allowMissingSdk()
             .issues(PeriodicEnqueueIssueDetector.ISSUE)
             .run()
             .expect("""
@@ -93,6 +94,7 @@
             PERIODIC_WORK_REQUEST,
             snippet
         )
+            .allowMissingSdk()
             .issues(PeriodicEnqueueIssueDetector.ISSUE)
             .run()
             .expect("""
@@ -134,6 +136,7 @@
             PERIODIC_WORK_REQUEST,
             snippet
         )
+            .allowMissingSdk()
             .issues(PeriodicEnqueueIssueDetector.ISSUE)
             .run()
             .expect("""
@@ -172,6 +175,7 @@
             PERIODIC_WORK_REQUEST,
             snippet
         )
+            .allowMissingSdk()
             .issues(PeriodicEnqueueIssueDetector.ISSUE)
             .run()
             .expectClean()
@@ -204,6 +208,7 @@
             PERIODIC_WORK_REQUEST,
             snippet
         )
+            .allowMissingSdk()
             .issues(PeriodicEnqueueIssueDetector.ISSUE)
             .run()
             .expectClean()

diff --git a/work/workmanager-lint/src/test/java/androidx/work/lint/RemoveWorkManagerInitializerDetectorTest.kt b/work/workmanager-lint/src/test/java/androidx/work/lint/RemoveWorkManagerInitializerDetectorTest.kt
index 99f532a..2a472bf4 100644
--- a/work/workmanager-lint/src/test/java/androidx/work/lint/RemoveWorkManagerInitializerDetectorTest.kt
+++ b/work/workmanager-lint/src/test/java/androidx/work/lint/RemoveWorkManagerInitializerDetectorTest.kt

@@ -68,6 +68,7 @@
             WORK_MANAGER_CONFIGURATION_PROVIDER,
             customApplication
         )
+            .allowMissingSdk()
             .issues(RemoveWorkManagerInitializerDetector.ISSUE)
             .run()
             .expectClean()
@@ -114,6 +115,7 @@
             WORK_MANAGER_CONFIGURATION_PROVIDER,
             customApplication
         )
+            .allowMissingSdk()
             .issues(RemoveWorkManagerInitializerDetector.ISSUE)
             .run()
             .expectClean()
@@ -158,6 +160,7 @@
             WORK_MANAGER_CONFIGURATION_PROVIDER,
             customApplication
         )
+            .allowMissingSdk()
             .issues(RemoveWorkManagerInitializerDetector.ISSUE)
             .run()
             .expect("""
@@ -211,6 +214,7 @@
             WORK_MANAGER_CONFIGURATION_PROVIDER,
             customApplication
         )
+            .allowMissingSdk()
             .issues(RemoveWorkManagerInitializerDetector.ISSUE)
             .run()
             .expect("""