POM updates

[jglick]

In #11 it was brought to my attention that #10 had been merged but did not actually work. Fixing that.

(The root issue was CRLF translation in what was supposed to be a binary file. Maybe a file with LF and no NUL is assumed to be textual?)

[jglick]

Hmm, test is passing for me on Windows 10.

[jglick]

At last a clue:

java.lang.Error: Failed to load the key: org.jenkinsci.plugins.plaincredentials.impl.FileCredentialsImpl
	at jenkins.security.CryptoConfidentialKey.getKey(CryptoConfidentialKey.java:53)
	at jenkins.security.CryptoConfidentialKey.decrypt(CryptoConfidentialKey.java:134)
	at org.jenkinsci.plugins.plaincredentials.SecretBytesTest.migrateLegacyData(SecretBytesTest.java:120)
	at …
Caused by: java.io.IOException: javax.crypto.IllegalBlockSizeException: Input length must be multiple of 16 when decrypting with padded cipher
	at javax.crypto.CipherInputStream.getMoreData(CipherInputStream.java:121)
	at javax.crypto.CipherInputStream.read(CipherInputStream.java:239)
	at javax.crypto.CipherInputStream.read(CipherInputStream.java:215)
	at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1792)
	at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1769)
	at org.apache.commons.io.IOUtils.copy(IOUtils.java:1744)
	at org.apache.commons.io.IOUtils.toByteArray(IOUtils.java:462)
	at jenkins.security.DefaultConfidentialStore.load(DefaultConfidentialStore.java:107)
	at jenkins.security.ConfidentialKey.load(ConfidentialKey.java:47)
	at jenkins.security.CryptoConfidentialKey.getKey(CryptoConfidentialKey.java:41)
	... 15 more
Caused by: javax.crypto.IllegalBlockSizeException: Input length must be multiple of 16 when decrypting with padded cipher
	at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:936)
	at com.sun.crypto.provider.CipherCore.doFinal(CipherCore.java:847)
	at com.sun.crypto.provider.AESCipher.engineDoFinal(AESCipher.java:446)
	at javax.crypto.Cipher.doFinal(Cipher.java:2047)
	at javax.crypto.CipherInputStream.getMoreData(CipherInputStream.java:118)
	... 24 more